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Dremel

Dremel 8240 12V Cordless Rotary Tool Kit Variable Speed (Renewed)

  • Based on 208 reviews
Condition: Refurbished - Excellent
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Availability: Only 3 left in stock, order soon!
Fulfilled by Amazon
Arrives Tuesday, Oct 20
Order within 3 hours and 8 minutes
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Features

  • Perfect For: The 8240 rotary tool kit features an optimized battery platform allowing DIYers to comfortably tackle a wide range of home improvement projects without the distraction of a cord
  • Powerful Battery: The powerful 12-Volt/2 AH Lithium-Ion battery provides maximum performance for extended working sessions
  • Cordless: The new 8240 provides cord-like power in a cordless form giving you the confidence to tackle the toughest of jobs
  • Ideal For: As the new flagship 12-volt cordless rotary tool, the 8240 rotary tool kit features an optimized battery platform allowing DIYers to comfortably tackle a wide range of home improvement projects without the distraction of a cord
  • Sleek New Design: The Dremel 8240 12V Cordless Rotary Tool Kit offers high performance and versatility, packaged in a sleek new tool design

Description

The Dremel 8240 12V Cordless Rotary Tool Kit is a portable and powerful multi- tool, offering the freedom of cordless operation with the performance of a corded tool, like the Dremel 4250. It features a high-performance 12V, 2.0 Ah Lithium-Ion battery and an included charger, providing long runtime and portability for use anywhere. Designed with user comfort in mind, it boasts an ergonomic, sleek design with an extended rubber soft grip for superior control and comfortable handling during long working sessions. The tool has a fully variable speed control ranging from 5,000 to 35,000 RPM for maximum precision across various tasks like cutting, sanding, grinding, carving, and polishing. It also includes features like a motor-brake for immediate stopping and an LED battery life indicator. The tool is fully compatible with all Dremel rotary accessories and attachments, including the EZ Twist nose cap for quick accessory changes.

Brand: Dremel


Voltage: 12 volts


Power Source: Battery Powered


Recommended Uses For Product: Cutting, Grinding, Polishing, Sanding, Carving, Trimming, Drilling


Color: Black, Gray


Voltage: 12 volts


Power Source: Battery Powered


Recommended Uses For Product: Cutting, Grinding, Polishing, Sanding, Carving, Trimming, Drilling


Other Special Features of the Product: Cordless, Variable Speed


Maximum Rotational Speed: 35000 rpm


Number of Batteries: 1 12V batteries required. (included)


Minimum Speed: 5000 rpm


Color: Black, Gray


Style Name: New Model


Item Weight: 1.5 pounds


Item Dimensions: 16.1 x 11.5 x 4.3 inches


Brand Name: Dremel


Included Components: Cordless Rotary Tool, (6) Rotary Tool Accessories, Accessory Storage Case, 12V 2.0Ah Battery Pack, GAL12V-20 Battery Charger, User Manual Fabric Tool Storage Case, Instruction Manual


Model Number: 8240-5


Unit Count: 1 Count


UPC: 657768325977


Manufacturer Warranty Description: 90 days limited warranty


Manufacturer: Dremel


Manufacturer Part Number: 8240-DR-RT


Item Highlight: 2AH Battery | Charger Included | Comfort Grip | Multi-Purpose Tool | Adjustable Speed | Carry Case


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Oct 20

Yes, absolutely! You may return this product for a full refund within 90 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Out this world powerful.
Man, when I say this thing beat my expectations. Out this world. I never had one and always thought it wouldn't have enough power. But the battery charger is in my opinion convenient. Charges quickly. Never used a whole battery. The bag is good to keep it inside and the bits also fit in the slim bag. Love that its cordless and for what I paid after watching all the reviews and YouTube change. This is the kind of purchase you buy ounce and your done. Awesome.l dremel. ... show more
Reviewed in the United States on October 2, 2025 by Eribel
    • Works great.
The battery lasts a good amount of time.
Reviewed in the United States on May 26, 2026 by Jackson Riffe
    • Great tool and even better customer service
When I used the Rotary Tool for the first time, there was a problem with it restarting after turning it off briefly. I contacted customer support by email. Within a few minutes of sending the email I received a very nice response with instructions about how to return the tool for service. I returned the tool as instructed. The tool was returned to me repaired within two weeks. This is awesome customer service that other manufacturers/sellers could emulate. As for the tool itself, it exceeds my expectations. This is the 5th Dremel rotary tool I have owned. Three of the other tools were corded and one was a first generation cordless. I have donated the tools to groups that will put them to good use. This rotary tool is significantly more powerful than my first cordless Dremel. It has a great feel in my hand and appears to be very sturdy. I can recommend the Dremel 8240 to anyone wanting to go cordless. ... show more
Reviewed in the United States on April 22, 2026 by L. Martin
    • Good tool buy
Great tool. Instructions are as clear as I would like but once past learning curve works very well
Reviewed in the United States on December 27, 2025 by CB929
    • Stay away .BAD
Broke with a very light usage . Stay away
Reviewed in the United States on June 10, 2026 by John
    • A must have.
As usual, Dremel is a good brand and the tools are sturdy but light. Very practical for different work, I'm using it to cut hole in my iron door to install a lock. But also for wood work and polishing. Can only recommend it.
Reviewed in the United States on May 22, 2026 by Philippe Frossard
    • Super tool
It’s great ! The fact it’s cordless is essential .it makes it a much better tool . Also get an extra battery
Reviewed in the United States on May 19, 2026 by Gary Jurgens
    • Perfect for travel
Perfect for travel. I do mobile orthotics and prosthetics. Sometimes I have to grind a small area on the go. This allows me to easily do this without being tethered to someone’s house. I can do this where I need to with more mobility. Battery is easily charged. Comes with a small variety of accessories. Adjustable rpms for various cutting and grinding. Packs easily in my car and bookbag. ... show more
Reviewed in the United States on July 6, 2025 by Matt Scoggin

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