20 Best Cordless Dremel Tool
Updated on: June 2023
Best Cordless Dremel Tool in 2023
Dremel 8220-1/28 12-Volt Max Cordless Rotary Tool Kit- Engraver, Sander, and Polisher- Perfect for Cutting, Wood Carving, Engraving, Polishing, and Detail Sanding- 1 Attachment & 28 Accessories
- COMPACT, PORTABLE, & POWERFUL: 12V Lithium-Ion battery provides maximum performance and run time at all speeds (5,000-30,000 RPM).
- VERSATILE ROTARY TOOL KIT: includes 8220 cordless rotary tool, 1 attachment, 28 high-quality Dremel accessories, charger, plastic storage case, and accessory case.
- QUICK ACCESSORY CHANGES – Patented EZ Twist Nose Cap makes accessory changes fast and easy without the need of a wrench
- REMOVABLE LI-ION BATTERY: Always ready with no memory effects. Charges in one-hour.
- SLIM & ERGONOMIC BODY – 360-degree grip zone & lightweight design allows you to work comfortable in tight spaces.
- ACCESSORY & ATTACHMENT COMPATIBLE: Accommodates all Dremel rotary accessories & attachments for thousands of applications. Kit includes Multipurpose Cutting Guide Attachment.
- 2 YEAR WARRANTY & USA-BASED CUSTOMER SERVICE – Available by chat, email, phone or visit us at our service center in Racine, WI.
- Can be used with all Dremel accessories and attachments
- Quick collet lock for fast accessory changes
- One-hour charger for minimal downtime
- High-performance motor designed for demanding applications
- Kit contains 28 accessories, carrying case, 1-hour charger, and one 12V max lithium-ion battery
Dremel 8050-N/18 Micro Cordless Rotary Tool Kit with Docking Station- Engraver, Polisher, and Detail Sander- Ideal for Glass Engraving, Wood Carving, Sanding, Polishing, and Cutting- 18 Accessories
- BRILLIANTLY POWERFUL – Cordless rotary tool with LED light offers the perfect combination of size, ergonomics, and power for precise and light-duty DIY projects.
- LED PROJECT LIGHT - Front end light illuminates projects for better visibility.
- HIGH CAPACITY RECHARGEABLE BATTERY – 8Volt Lithium-Ion battery delivers compact power and longer run times. Always ready and no memory effects.
- DOCKING STATION – Continually charges the tool so it always fully charged and ready to use. LED Battery Life Indicator lets you know when it’s ready for a recharge. 3 hour & 45 minute charge time.
- VARIABLE SPEED WITH LED DIAL – Achieve your optimal speed between 5,000 – 25,000 RPM using the LED Speed Dial Indicator
- VERSTATILE TOOL KIT – Includes 8050 cordless rotary tool, 18 high-quality Dremel accessories, and a charging dock.
- SLIM & ERGONOMIC BODY - for added comfort & grip during extended use
- 2 YEAR WARRANTY & USA-BASED CUSTOMER SERVICE – Available by chat, email, phone or visit us at our service center in Racine, WI.
Dremel 7300-PT 4.8V Cordless Pet Dog Nail Grooming & Grinding Tool, Safely & Humanely Trim Pet & Dog Nails
- PET NAIL GROOMER AND GRINDER - This rotary tool is a pet nail groomer and grinder that offers a safe, effective, less stressful alternative to using clippers on your dogs nails. Material: High Density Plastic. Battery Chemistry: Nickel-Cadmium (NiCd).
- VARIABLE SPEED - Two rotation speeds let you safely and carefully grind the nails of your dog or pet in stages. Battery-powered device uses a 60-grit sanding drum to comfortably trim nails in a manner that is designed to be harmless and humane.
- LIGHTWEIGHT - The lightweight, cordless rotary tool works with two speed settings 6,500 and 13,000 RPM and an array of Dremel sanding drums and bands to give you full control even at the fastest speed.
- BATTERY - The 7300-PT 4.8V Rotary Tool is backed by a two-year warranty, 3-Hour Battery Charge, and works with a 755-01 4.8V Battery.
- ACCESSORY CHANGE - In order to insert the bit into the tool, the user must first unscrew the top in order for the collect to expand, and once the bit is inserted, the user would then tighten the top to secure the bit.
Dremel Lite 7760 N/10 4V Li-Ion Cordless Rotary Tool Variable Speed Multi-Purpose Rotary Tool Kit, USB Charging, Easy Accessory Changes - Perfect For Light-Duty DIY & Crafting
- Multipurpose rotary tool – from woodworking, carpentry, car care to jewelry making and more; The versatile 7760 Lite is the diyer’s go-to solution for small home improvement jobs, and crafting projects. Includes 10 accessories to kick start your projects right out of the box.
- Quick accessory changes – with the patented EZ twist nose cap, accessory changes are easy and done without the need of a wrench. Collet size is 1.8”.
- Variable speed - Seamlessly adjust to the ideal speed from 8, 000 to 25, 000 for optimal control & maneuverability
- Easy battery charging- the rechargeable 4V li-ion battery & convenient USB charger ensures that it’s ready whenever you are.
- Battery life indicator- LED light illuminates to notify you when the battery needs to be charged
- Portable & lightweight – 360 Degree soft grip material allows for comfort & precise control. Cordless design offers the freedom to take it anywhere
- Compatible – can be used with most Dremel accessories and a selection of attachments
- What’s in the kit – 7760 Lite 4V Li-on cordless rotary tool, 10 piece Accessories, accessory case, USB charging cable & power adaptor, user Manual, quick start guide, 2 year warranty card
Cordless Rotary Tool, TECCPO 12V Powerful Rotary Tool Kit with 2.0Ah Li-ion Battery, Universal Keyless Chuck, 1-Hour Fast Charger, 6-Speeds Adjustable, 80 Accessories, Perfect Gift for DIY & Crafts
- 【Fast charging, Portable】 ▶ With a 12 V, 2.0AH Lithium-ion battery and 1-Hour Fast Charger, the Cordless Rotary Tool is convenient for outdoor work. Wireless design for easy portability. Allows you to use it more efficiently and freely. The ergonomic design makes it compact, portable and easy to handle for detailed projects.
- 【Quick-change Keyless Chuck and Flex Shaft】 ▶ The special Keyless Chuck can be used with all Dremel accessories and attachments with diameters from 1/33 to1/8 inch. Tool-free replacement, simple and efficient.The flexible shaft can be attached to the rotary tool in seconds, making it easy to reach.
- 【6 Speeds Adjustable】 ▶ 6-speed switch accelerates the power evenly from 5,000 to 28,000 RPM, allowing flexible adjustment of rotation speed for different scenarios. You can easily control the fine carvings on wood, glass, metal, plastic, tiles and others.The high-performance rotary tool has powerful motor that increases work efficiency and reduces noise. Perfect for sanding, polishing, cutting, shaping, drilling, deburring, grinding, cleaning, engraving, trimming and even grooming pets’ nails.
- 【Multifunction Accessories】 ▶ Thanks to the 80 numerous accessories and 4 useful attachments supplied with the cordless rotary tool, this device can be used as a mini electric sander, engraver, mini drill, pocket grinder or finishing polisher. It is ideal for DIY crafts and gifts making. Cutting guide for a more stable, more precise cut. Auxiliary Handle is the best tips for comfortable using and stable engraving etc.
- 【Accessories & 2-YEAR QUALITY PROMISE】 ▶ All the accessories are compatible to Dremel. 1xTECCPO TDRT03P Cordless Rotary Tool, 1x 12V 2.0Ah Lithium-ion Battery , 1x 1-Hour Fast Charger, 1 x Tool Box, 80 x Accessories, 1x Cutting guide, 1x Flexible Shaft, 1x Auxiliary Handle , 1x Quick-change Keyless Chuck. TECCPO offers 2-YEAR QUALITY PROMISE, please contact us if you encounter any questions/concerns about anything. Our dedicated customer service team will always react within 24 hours.
WEN 23072 Variable Speed Lithium-Ion Cordless Rotary Tool Kit with 24-Piece Accessory Set, Charger, and Carrying Case
- Rechargeable 7.2V lithium ion battery allows for cordless operation
- Versatile tool cuts, sands, polishes, drills, carves, etches, deburrs and more
- Variable speed dial allows for operation from 5,000 to 25,000 RPM in increments of 5,000 RPM
- Lightweight design weighs in at a mere 0.6 pounds to limit fatigue during operation
- Includes 24 accessories, onboard LED lights, a charger, and a compact carrying case
Avid Power Cordless Rotary Tool 8V Li-ion with 2.0 Ah Battery, 5-Speed, 4 Front LED Lights and 60pcs Accessories Kit for Carving, Engraving, Sanding, Polishing and Cutting
- POWERFUL MOTOR & VARIABLE SPEED: With the 8-volt output, 2.0AH Lithium-ion battery, this rotary tool can generate strong and steady power. Variable speed from 5,000 to 25,000 RPM, allowing for flexible adjustment of rotation speed.
- ERGONOMIC DESIGN: Compact and lightweight body makes it light and easy to handle for delicate tasks and finer work; Rubber-covered handle with anti-slip function provides comfortable grip for better control.
- CONVENIENCE & HIGH PERFORMANCE: 4 Front LED lights illuminates dark working spaces; variable speed indicator and battery charging light allow for convenient use; Spindle lock allows easy and quick accessories change.
- VERSATILE 60PCS ACCESSORIES: This rotary tool comes with 60pcs accessories, which can be used to do all kinds of home projects or crafting jobs, such as grinding, cutting, sanding, carving, polishing, drilling and more.
- WHAT WOULD YOU GET: 8V 2.0AH cordless rotary tool, tool bag, 60pcs accessories, accessory case, battery charger, user manual. Buy at ease!
TACKLIFE Cordless Rotary Tool 8V Power 2.0 Ah Li-ion Battery with 43 Accessories and Shield Attachment, Long Endurance Power- Perfect for Sanding, Grinding, Cutting and Engraving -RTD02DC
- Outstanding Quality: Cordless rotary tool 8v equips with excellent motor, which keeps powerful dynamic while it’s wireless. Easily meet DIY and home improvement work.
- Speed Selection: 5,000 to 30,000 RPM output makes the rotary tool more prominent. Five Speed gear selection can precisely apply to different situations, and make your projects easier and more professional.
- Long Battery Endurance: 2.0 Ah battery capacity enhance the rotary tool using endurance (up to 60 minutes idling). 4 LED indicators show the using power precisely, which sets your mind free from worrying about running out of power. The rotary tool kit also includes 1A quick charger making the recharge more quickly.
- Excellent Accessories and Attachment: With 43 accessories/bits, you can easily finish work like grinding/sanding, carving/engraving, cutting, polishing, drilling, cleaning and etc. With shield attachment, your personality making become safer and more comfortable.
- Surprised Gift: Besides the 8v rotary tool, we also gift a high-quality cloth bag, which can prevent the rotary tool from shock and moisture.
WORKPRO Cordless Rotary Tool Kit Variable Speed 12V Li-Ion Battery Powered with 70-piece Accessory in Case for Around House DIY and Crafting Projects
- ✅ HIGH PERFORMANCE - Our rotary tool is powered by a 12 voltage, 1.5AH Lithium-ion battery for strong and steady power and an endurable run time. The battery is simple to change and charge. Rated speed from 0-22000RPM, 6-position in speed controller (variable speed dial) to adjust speed for multiple purposes
- ✅ 70-PIECE COLLET ACCESSORY SET - This rotary tool set includes up to 70 different collet accessories that can used. They can be used on wood, glass, plastic, metal and much more
- ✅ SUPER SAFE & COMFORTABLE TO USE - Our rotary tool is built with a soft grip handle for added comfort and gives you total control of the tool without heavy fatigue while using. Comes with a spindle lock button and quick stop button for extra security and safety so you can rest assure that your health is in safe hands. It is compact and lightweight for accurate work
- ✅ ORGANIZED, PORTABLE STORAGE CASE - Your brand new rotary tool set can be neatly and tidily organized into our lightweight storage case. Easily find your tools when you need them. This portable case is easy to carry allowing you to take your tools with you to work, around the house or outdoors
- ✅ LONG-LASTING TOOLS WITH 2 YEARS WARRANTY - Our tools are made from high quality materials which makes them extremely durable and long-lasting. We are so confident in the quality and lifespan of our product that it is backed with a two years warranty. If you have any issues, please don’t hesitate to contact us anytime, night or day :-)
KeShi Cordless Rotary Tool, 3.7V Li-ion Rotary Accessory Kit with 42 Pieces Swap-able Heads, 3-Speed and USB Charging Multi-Purpose Power Tool for Delicate & Light DIY Small Projects
- [3 POWERFUL SPEED SETTINGS + GREAT VENTILATIONl]: 3 powerful speed selections with scattered vent holes. 5000 rpm all the way up to 15000 rpm speed that makes your artwork DIY creation a quite easy thing, while the vent holes on the body effectively dissipate the heat released when the power rotary tool is running, extending battery life for a long-term and safe use.
- [RECESSED POWER BUTTON DESIGN]: With the groove power button design, you no longer have to worry about the rotary tool being stopped due to accidental touch on the switch, all the engraving/polishing work is done with nonstop. Ideal for DIYers and professionals alike
- [42 PREMIUM SWAP-ABLE HEADS]: Comes with 42 attachments and accessories in total that makes it a great deal, while shifting from one bit to another is so easy. Collets x 3(1/16",3/32",1/8"), Mandrel x 1, Drill Head x 1, Polishing Drum x 1, Sanding bands x 25, Grinding Stones x 6, Dimond Tip Bits x 5, Attachments Storage Case x 1
- [PRECISE CONTROL FOR MULTIPLE PURPOSES]: Whenever you are thinking of: engraving, sharpening, grinding, polishing or sanding, you will find this power rotary set a must-have for your handy & light artwork creation with optimum precision and control. It is suitable for wood, plastic, tile, glass, stone, metals, etc
- [2 HOURS QUICK USB CHARGE + OVER-CHARGE PROTECTION]: You tired of repeatedly charging? Time to try this power rotary set. It can work 90 minutes after 2 hours fully charge. And built-in overcharge protection, your battery is still well protected even you forget to take it off from your wall outlets or computer when it is fully charged.
TACKLIFE Upgraded Cordless Rotary Tool 4V Power Potable Grinder with 31 Accessories and USB Cable for Recharging, Perfect for DIY Creation and Light Duty - RTH30DC
- 🔨Small but Powerful: The cordless rotary tool has 4V power but keeps the portable size, which can meet most of requirements of your DIY projects and home improvement jobs without any hassle and inconvenience.
- 🔨High Speed and Long Battery Endurance: Dual speed switch and up to 22,000 RPM can beat most of mini sized cordless rotary tool and give you more power to finish your work. 2.0 Ah Li-ion battery means you can have more using time with high performance.
- 🔨Various Accessories: 31 pieces of accessories help to do different work like sanding, grinding, cleaning, engraving and etc. Moreover, the cordless rotary tool is compatible with most accessories of other rotary tool brands.
- 🔨Easy and Quick Charge: The Micro USB cable allows you can easily charge the cordless rotary tool in many places, about 3 hours charge can save your more time in working.
- 🔨You Can Get: 4V cordless rotary. tool; Accessory Case; 31 pieces of accessories; USB cable; user manual
WEN 23006 Two-Speed Cordless Rotary Tool Kit with 10-Piece Accessory Set
- Set yourself free with cordless battery-powered operation (AA batteries sold separately)
- Versatile tool cuts, sands, polishes, drills, carves, etches, deburrs and more
- Two-speed dial allows for operation from 7,000 to 14,000 RPM
- Lightweight design weighs in at a mere 0.6 pounds to limit fatigue during operation
- Includes a collet (1/8”), 2 sanding bands, 2 grinding stone bits, and 2 diamond-coated bits, a sanding drum mandrel, a nylon wire brush, a HSS cutter, and a 2-in-1 wrench
Dremel 8220-1/28 12-Volt Max Cordless Rotary Tool With All-Purpose Rotary Accessory Kit, 160-Piece
- DREMEL 8220 SERIES: Offering the highest performance and versatility of all Dremel cordless rotary tools, the Dremel 8220 Variable-Speed Cordless Rotary Tool offers a vast amount of uses for a wide range of projects.
- DESIGN: A slim and ergonomic body with a 360-degree grip provides comfort and control in any position.
- SPEED: The variable speed control can be adjusted from 5,000 to 35,000 RPM for maximum precision with a separate on/off switch and speed control retains speed settings for perfect control every time.
- RECHARGABLE: The rechargeable 12VMAX Lithium-ion battery provides power to the tool and the EZ Twist nose cap with wrench provides quick and easy accessory changes.
- BUNDLE INCLUDES: Dremel 8220 Series 12VMax Cordless Rotary Tool (carrying case, 1-hour charger, and one 12V max lithium-ion battery) and Dremel 710-08 All-Purpose Rotary Accessory Kit, 160-Piece
GOXAWEE Rotary Tool Kit with MultiPro Keyless Chuck and Flex Shaft - 140pcs Accessories Variable Speed Electric Drill Set for Crafting Projects and DIY Creations
- ★ Quick Change Drill Chuck - Come with 3 Jaw Universal Chuck applying better stability on your projects, allows you to quickly and easily change accessories on Rotary machine tool freely. GOXAWEE Multi Chuck accepts accessories from 1/64” to 1/8” shank, wider compatible than others. Ideal when the application requires numerous accessory changes.
- ★ 140pcs Attachment & Accessory - Flexible Shaft holds like a pen for your precise projects. Cover Shield provide better protection for cutting and grinding. Drill Locator helps for precision work on wood. Diamond Cutting Wheel is the best tips for glass, ceramic, floor tile etc. Versatile accessories include a pair of extra carbon brush, rescue you from searching new set and saving money.
- ★ Variable Speed & Compact - Variable speed dial is easy to use. The Variable Speed Adjustment Knob showing 5 Step Speeds from 8,000 to 30,000 RPM. By adjusting the speed you can make delicate engravings on wood, glass, metals, plastics, tile and other materials with control easily. Its ergonomic compact rotary tool design makes it handhold size, lightweight, not make the loud noise.
- ★ High-Performance Craft Tool - Perfect for sanding, polishing, cutting, shaping, drilling, deburring, grinding, cleaning, engraving, trimming etc, and enabling you to achieve different crafting work efficiently. Whether you are repairing home tasks or lighting your creations, this is really a worth value investment.
- ★ Amazing Gift for DIY Enthusiasts - Packed in a solid carrying case. It’s more solid, falling resistant and moisture-proof. Machine and accessories are well organized in, easy to place, light weight, portable for carrying. GOXAWEE Rotary Toolkit G4007 is great for the DIY craft and small family projects. It’s also the gift for the people who are keen on handmade stuff.
Cordless Rotary Tool Kit 8V with Quick-Charge Docking Station, 5-Speed and 21pcs Accessories Kit for Carving, Engraving, Sanding, Polishing and Cutting, Avid Power
- QUICK CHARGE DOCKING STATION: This cordless rotary tool charges quickly in the provided docking station, taking only 1-2 hours to reach a full charge. The docking station also provides a place to store your rotary tool !
- VARIABLE SPEED & BRIGHT LED LIGHT: The 5 different speed settings on this rotary tool kit allows you to choose a right speed from 0-25000 RPM. It also features four LED work lights that allow to easily see whatever you are working on.
- SMALL, LIGHTWEIGHT BUT POWERFUL: Designed to be easily and comfortably held in your hand like a pencil, the dremel tool itself only weighs 0.7 lbs. The compact size gives you the ability to work in smaller spaces as well.
- 21 PCS ACCESSORY KIT: The rotary tool kit provides just about everything you need to finish up your projects. With the 21 piece accessory kit, you can easily carve, cut, polish, engrave, clean, sand, sharpen, and more! Can also used as a Dog Nail Grinder to gently trim pet's claws.
- INCLUDED IN THE BOX: 1*8V Cordless Rotary Tool, 21 Pcs Accessory Kit, 1*Quick Charge Docking Station, 1*User Manual; If you receive a defective product, contact us and we will immediately send you a replacement for free. No return required.
Dremel 4000-4/34 Variable Speed Rotary Tool Kit - Engraver, Polisher, and Sander- Perfect for Cutting, Detail Sanding, Engraving, Wood Carving, and Polishing- 4 Attachments & 34 Accessories
- VERSATILE ROTARY TOOL KIT: includes 4000 corded rotary tool, 4 attachments, 34 high-quality Dremel accessories, plastic storage case, and accessory case
- HIGH PERFORMANCE MOTOR – Provides maximum power and performance at all speeds. Variable speed (5,000 – 35,000 RPM) and electronic feedback circuitry for consistent performance even in the most demanding applications
- INNOVATED AIR FLOW SYSTEM- ventilation mechanism helps prevent heat build-up for smoother, cooler, and quieter operation
- SLIM & ERGONOMIC BODY – 360-degree grip zone for added comfort & grip during extended use
- SEPARATE ON/OFF SWITCH & SPEED DIAL – for the perfect speed every time
- 34 VERSATILE ACCESSORIES INCLUDED: Ideal for DIY or crafting projects like sanding, grinding, cutting, carving, polishing, and drilling.
- 4 ATTACHMENTS INCLUDED - Multipurpose Cutting Guide, Sanding/Grinding Guide, Circle Cutter/Straight Edge Guide, and Detailer’s Grip
- 2 YEAR WARRANTY & USA-BASED CUSTOMER SERVICE – Available by chat, email, phone or visit us at our service center in Racine, WI
TACKLIFE Rotary Tool Kit Variable Speed with Flex shaft, 80 Accessories and 4 Attachments and Carrying Case, Multi-functional for Around-the-House and Crafting Projects-RTD35ACL
- 🔨 4 Attachments Support: : In this rotary tool kit we have Flex shaft improves the product flexibility, and makes your precise project more comfortable and relaxing; Shield provides perfect protection when you conduct cutting and grinding work; Detailer grip allows you focus on your precise carving, grinding and engraving and gives more stability; Cutting guide is suitable for different depth cutting, and keeps good perspective and stability.
- 🔨 Multipurpose Accessories: 80 accessories covers various application ranging from cutting, engraving, drilling, sanding, polishing and even grooming pets’ nails. And there are more applications and project waiting for you to discover.
- 🔨 Excellent Performance : The high-performance rotary tool has powerful motor providing strong rotational power with lower noise making. 6 levels speed shift ranging from 10,000 rpm to 32,000 rpm makes your DIY project easily conduct.
- 🔨 Comfortable operation: The product is lightweight and convenient. Ergonomic design with overmold allows long-time working be more relaxing and cozy.
- 🔨 Friendly Customer Service and Support: You will get Rotary Tool; Knit Box; Accessory Case; 80 Accessories; 4 Attachments (Cutting Guide, Detailer Grip, Flex Shaft); User Manual.
Dremel 7300-N/5 4.8V MiniMite Cordless Rotary Tool
TACKLIFE Cordless Rotary Tool Lite 3.7V Three Speed with 31 Accessories, Perfect for Nail Polishing and Light Duty, USB Charging Cable-PCG01B
- 🔨3 Speeds for Versatile Projects: 5000rpm, 10000rpm, 15000rpm, more speeds for you to finish polishing, cleaning, engraving, nail grooming or lightweight plastic housing projects
- 🔨Various Accessories for Creations Equip with 31 accessories such as sanding band, drill bits, grinding wheels, diamond bits etc.
- 🔨Micro USB Connector for Convenient Charge Compatible with charger, which enables you to charge the mini rotary tool at any time, 3.7 V rechargeable lithium battery for safe operation
- 🔨Comfortable Handy Size & Very lightweight pen size makes your creations more free
- 🔨What You Can get: 1 x 3.7v Cordless Rotary Tool, 1 x USB Charging Wire, 1 x Accessory Case, 31 x Accessories
Cordless Rotary Tool with Docking Station, Variable Speed and 41pcs Accessories, Perfect for Grinding, Cutting, Wood Carving, Sanding, and Engraving, C P CHANTPOWER
- Convenient Docking Charge Station – No task will be left unfinished thanks to dead batteries. The rotary tool comes with a charging base, making it easy to set up on any craft or work station. It takes only 1-2 hours to reach a full charge.
- Five Variable Speeds and LED Work Light – The speed setting on this rotary tool adjusts from 0-25000RPM, with 5 different speeds to choose from. The small front LED work lights help you to see what are you doing exactly.
- Lightweight and Ergonomic Design – Designed to be comfortably held in your hand, the lightweight body of our rotary tool won’t cause strain as you work, so you don’t get tired of holding it for long periods of time.
- Precise Control –This small tool kit is useful for small DIY and light duty projects. The handheld & cordless design enables you to maneuver the tool in whatever direction you desire.
- 41PCS Accessory Kit – The included kit comes with a variety of heads for grinding, polishing and sanding
How to Clean the Grout Between Tiles
To clean the grout between tiles you can use a toothbrush. It may take longer for you to clean tile grout then using a Dremel tool but you can do it.
To clean the grout between tiles you can use a toothbrush. It may take longer for you to clean tile grout then using a Dremel tool but you can do it.
Cleaning grout with a toothbrush is a good way to get into the cracks that you can't get into with a rag. The bristles on the toothbrush are small and they can fit into the cracks of the grout and scrub away the dirt, grim and mold that is on the grout.
You can take hydrogen peroxide to help the toothbrush clean the grout. Just put some hydrogen peroxide into a glass and set the toothbrush into the hydrogen peroxide. Let the toothbrush soak up some of the peroxide and the scrub the grout between the tiles. The peroxide will help to bleach out the gray color of the dirty grout and it will also kill any mold or mildew that has grown on the grout.
After you are done scrubbing the grout with the hydrogen peroxide and a toothbrush you can rinse the tiles and the grout and see if you missed any spots. You can get the spots you missed with more hydrogen peroxide and the toothbrush.
Rinse the tiles and grout off well and your grout should look great again. Hydrogen peroxide is a great cleaner that is safe to use. A toothbrush makes a great cleaning tool for small places. Tile has grout to hold the tiles in place and the grout does not have a shiny surface it has a porous surface that mold and mildew can grow on.
As you clean the grout it is OK to scrub the tiles while you are at it. The tiles are probably not as clean as they could be and it won't hurt to scrub them with the peroxide and toothbrush.
The toothbrush you use does not have to be a clean toothbrush. It can be an old used toothbrush that was used for teeth first.
Cleaning grout with peroxide and a toothbrush is an economical way to clean grout since peroxide does not cost a lot of money.
