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Dremel

Dremel 8240-5 12V Cordless Rotary Tool Kit with Tool Fabric Carry Bag

  • Based on 2,351 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Sep 14 – Sep 15
Order within 10 hours and 34 minutes
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Style: Original Kit


Features

  • COMPACT, PORTABLE, & POWERFUL: Dremel cordless rotary tool with 12 Volt / 2 AH Lithium-Ion battery provides maximum performance, high power, and runtime at all speeds (5,000-35,000 RPM)
  • INNOVATIVE TOOL DESIGN: This Dremel rotary tool's sleek and ergonomic design with 360-degree grip zone maximizes comfort and control allowing continuous performance for extended working sessions
  • VERSATILITY: Dremel tools are able to perform the widest range of applications, including but not limited to cutting, sanding and grinding / sharpening. Fully compatible with all Dremel accessories and attachments
  • QUICK ACCESSORY CHANGES: This cordless rotary tool has a Patented EZ Twist Nose Cap that makes accessory changes fast and easy without the need of a wrench
  • MAXIMUM RUN TIME: Advanced technology gives this Dremel power rotary tool optimum battery life and power
  • LED BATTERY LIFE INDICATOR: Indicates remaining battery life on this cordless Dremel tool before a recharge is needed
  • NOISE CONTROL: The 8240 rotary power tool features ventilation openings to support smooth, cool, and quiet operation
  • KIT CONTENTS: Dremel 8240 rotary tool and 5 rotary Accessories

Description

This cordless Dremel tool kit 8240 offers high performance and versatility, packaged in a sleek new tool design for homeowners and hobbyists to use at home or in the workshop. The new flagship 12-volt rotary tool cordless 8240 features an optimized battery platform, precision control, and cordless convenience. This allows DIYers to comfortably tackle a wide range of home improvement projects like engraving, polishing, carving, or woodworking without the distraction of a cord. The powerful 12-Volt / 2 AH Lithium-Ion battery provides maximum performance and long runtime for extended working sessions with rotary bits, cutting wheels, or sanding drums. This Dremel 8240 provides cord-like power in cordless form, giving you the confidence to tackle the toughest of jobs.

Brand: Dremel


Voltage: 12 volts


Power Source: Battery Powered


Recommended Uses For Product: Deburring, Grinding, Polishing, Sanding


Color: Black


Voltage: 12 volts


Power Source: Battery Powered


Recommended Uses For Product: Deburring, Grinding, Polishing, Sanding


Other Special Features of the Product: Compact, Cordless, Variable Speed


Maximum Rotational Speed: 35000 rpm


Number of Batteries: 1 Lithium Ion batteries required. (included)


Minimum Speed: 5000 rpm


Battery Average Life: 2 hours


Color: Black


Style Name: Industrial


Item Weight: 1.5 pounds


Item Dimensions: 9.98 x 2 x 2.38 inches


Item Highlight: Comfort Grip, Variable Speed, Includes 2AH Battery Pack, Charger, 5 Rotary Tool Accessories, Wrench & Carry Bag


Brand Name: Dremel


Included Components: 8240, B815-01 2.0Ah battery, GAL12V-20 charger and 5 accessories


Model Number: 8240-5


Unit Count: 1 Count


Number of Items: 1


UPC: 080596057336


Manufacturer Warranty Description: Limited 2 Years


Item Type Name: Rotary Tools


Manufacturer: Dremel


Manufacturer Part Number: 8240-5


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sep 14 – Sep 15

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Picked during Prime Deals and have no regret.
Style: Original Kit
IMPORTANT! If your tool is flashing green when it is turned on, set it 10 to 15k and try again. Toggle on and if it still flashes try again. Now to the review. This is a great tool. It's got plenty of power and can SAND through a board. Not just cut. With a SANDING DRUM you can go through a board. It doesn't bog easily above 10krpm. It is great for cutting bolts, cutting sheet metal, sanding metal and wood, rough and fine shaping in wood. Fine shaping in aluminum, polishing steel, rough axe or lawn blade sharpening, engraving, and much more I haven't done yet. The battery life is good, but it leaves some to be desired. It can be gripped like a golf club for grinding, and shaping, or like a pencil for fine and detailed work. The battery charges in 30 to 40 minutes. It is quite heavy, but not enough to stop most detailed work. I can't say much about durability, as I've only had it for a week, but I've got it covered on sawdust, metal dust and splashed with water lightly. This is a brushed tool, but there is not a way to change brushes, so I guess you replace it. Fine with me for 70$, but might be a deal breaker for some to replace every 150 hours. It is a great starter dremel though. You will have to buy a lot more accessories to fuel your rotary addiction, but at this price it's pretty easy to. The carrying case is a huge bonus. It fits my 110 piece accessory kit with the charger, tool and battery. I overall, a great buy. ... show more
Reviewed in the United States on October 17, 2025 by Joseph K.
    • Works great batteries and charger also work great.
Style: Original Kit
Love this tool, use it for everything. Has multiple rpm settings for versatility. Has saved me a bunch of money by repairing stuff myself.
Reviewed in the United States on January 31, 2026 by Galen Goram
    • Great replacement for the 15 year-old predecessor.
Style: Original Kit
This is replacing my last cordless Dremel that lasted over 15 years. This one is performing just as I expected. If I have a negative, it would be the bulkiness. Other than that, I like the variable speed and in my opinion it's well balanced.
Reviewed in the United States on January 20, 2026 by William
    • Good
Style: Original Kit
Good cordless's fool
Reviewed in the United States on January 26, 2026 by Benny M.
    • Power and run time more than expected
Style: Original Kit
Previous model was corded. Very impressed with battery powered speed, strength, and run time. Also, the removal of the cord makes odd angles, and tight spaces so much easier comfortable
Reviewed in the United States on April 3, 2026 by Ryan Burkhalter
    • Great for indoors or outdoors!
Style: Original Kit
The Dremel 8240 is a cordless, battery operated tool, that can be used indoors and outdoors equally well. It is powered by a 12v Lithium-Ion battery with home charger, extra batteries can be purchased for more outdoor time. The tool has variable speed from 5,000 to 35,000 rpm controlled by a small rotary dial. Build quality is very good ant these tools will stand up to hard wear. Very easy to use, the size is not much longer that the ac mains version. The design looks very good with its two tone light and dark grey body. For its size it is very light weight and it works great. I love it as I can usit for little jobs on my car as well as the workbench. I would advise owners to invest in a Dremel 3-jaw chuck wich makes using small drills a lot easier. Great tool highly recommended. ... show more
Reviewed in the United States on April 20, 2025 by c00lbrit
    • Impressive
Style: Original Kit
This thing is impressive. I got another version of the cordless dremel and was disappointed. This one is as powerful as the corded, quieter than the corded and works as any of the dremel
Reviewed in the United States on January 11, 2026 by J
    • Very High-quality tool, everything you'd expect from a Dremel.
Style: Original Kit
There's a reason the name brand is synonymous for the rotary tool, they make first class rugged quality tools that are the best at what they do. The device is easy to use, switching out tools is intuitive and simple. The battery life is surprising for its small size and the power output this Dremel is capable of. I would stipulate that this is not a beginner Dremel, you've got to really know how to use a rotary tool already for this, it does not come with labels or instructions for the different tools. I would personally also like to have seen more cutting discs included and some other grinding and sanding heads as the selection is fairly basic, you should plan to purchase the additional tool set with this. That being said, it made short work of the galvanized steel aircraft latch I needed to alter and later in the day I was able to use one of the cutting disks to alter some Warhammer models. The tool isn't too heavy and can be used easily for detail work, however it is a bit long and bulky if you need to get in a really small space. It is far easier to use than a corded version, however. Overall, I would highly recommend this tool for nearly any application, you really do not need a more powerful Dremel unless you are planning on a long-term professional jobsite with a really high-power demand. ... show more
Reviewed in the United States on September 13, 2023 by Owen

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