Dremel 8240 12V Cordless Rotary Tool Kit with Variable Speed and Comfort Grip & Additional B815-01 2AH Lithium-ion Battery Pack
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Features
- Kit Contents: Cordless 12V Rotary Tool Kit with 3 Sanding Bands, 1 Cut-Off Wheel, Mandrel, Wrench, 12V Battery, Charger and Fabric Tool Case. Also included is a additional 12V 2AH Battery.
- Compact, Portable & Powerful: 12 Volt / 2 AH Lithium-Ion battery provides maximum performance, high power, and runtime at all speeds (Variable Speed: 5,000-35,000 RPM).
- Versatile: Able to perform the widest range of applications, including but not limited to cutting, sanding & grinding / sharpening. Fully compatible with all Dremel Accessories & Attachments.
- Quick Accessory Changes: Patented EZ Twist Nose Cap makes accessory changes fast and easy without the need of a wrench
- Spare battery pack so you don't have to quit working to recharge your battery
- Advanced technology for optimum battery life, runtime and power
Brand: Dremel
Voltage: 12 Volts
Power Source: Battery Powered
Recommended Uses For Product: Cutting,Grinding,Sanding
Color: Black
Brand: Dremel
Voltage: 12 Volts
Power Source: Battery Powered
Recommended Uses For Product: Cutting,Grinding,Sanding
Color: Black
Special Feature: Cordless
Included Components: Cordless 12V Rotary Tool Kit, 3 Sanding Bands, 1 Cut-Off Wheel, Mandrel, Wrench, 12V Battery, Charger, Fabric Tool Case, and Additional 12V 2AH Battery
Maximum Rotational Speed: 35000 RPM
Minimum Speed: 5000 RPM
Style: Original Kit + Battery
Item Package Quantity: 1
Special Features: Cordless
Date First Available: March 29, 2023
Frequently asked questions
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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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
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.
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Reviewed in the United States on April 20, 2025 by c00lbrit
Style: Original Kit
Love it !! I've always wanted one and finally bought one for a project on my truck. Lots of power and easy to use. I especially like all the attachments that are available, I purchased several. A very unique tool for unique projects. VERY high quality too.
Reviewed in the United States on April 1, 2025 by Eric Douglass
Style: Original Kit
This is a powerful little tool with multiple speed selections. It is not variable speed, you have to select the rpm’s you want. This was my first time using the Dremel tool and I needed to cut off a large bolt holding a pulley on a lawn tractor. It took a metal cutting blade and the highest speed but it got the job done. There are many different heads available for the tool but not included in this package I’m looking forward to seeing just how versatile this tool can be. The battery is rechargeable so there is no cord to get in the way and it seems to last a good while. Use all safety precautions because it would be very easy to accidentally injure yourself if not careful. My hands are small so I was more comfortable using both hands on the tool for cutting metal. I think it is a good choice.
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Reviewed in the United States on September 4, 2024 by LP in NC
Style: Original Kit
Everything I expected from a Dremel tool, portability, battery charger gets it usable in only a couple of hours, long enough battery life for several hours, speed adjustability, lightweight, works great, fits same tools my corded Dremel uses. Unfortunately, the battery is impossible for me to remove from the tool. I honestly have to take it to a very strong neighbor, who can barely remove it.
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Reviewed in the United States on April 18, 2025 by td
Style: Original Kit
A cordless Dremel can be used anywhere, any time and in any position for a multitude of tasks. My husband tells me how much he loves it every time he uses it. Highly recommended.
Reviewed in the United States on April 2, 2025 by 4myRVpantry
Style: Original Kit
Worked great for project (drywall and wood)
Reviewed in the United States on March 20, 2025 by jr
Style: Original Kit
Working in the Veterinary field, this Dremel is a must for pedicure & file! Really appreciate the adjustable speeds. Low & slow for puppies & small dogs, while those big pups require a higher intensity/speed. Good quality overall & good shelf life as long as you keep up with getting the nail dust out. Do use caution (esp w/ long coat dogs) & no constant contact as the heat level increases & could be uncomfortable for your puppers.
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Reviewed in the United States on March 23, 2025 by Dhdoodle
Style: Original Kit
This is a great tool. A little heavy for it size, but understandable due to the battery that is removable so you can charge it. But I would rather have this than the ones that you just plug in to charge. This one is great for its ability to change speeds. I think this is a great tool for its price.
Reviewed in the United States on November 7, 2024 by Craig Langkau