Sonicrafter 3.0 Amp Oscillating Multi-Tool

Model # RK5121K

Regular Price: $79.99

Special Price $69.99

Availability: In stock

Ships for free
  • Hyperlock tool-free blade change system provides 1 ton of clamping force to prevent blade slippage
  • Universal Fit System accepts other major brand accessories
  • Higher oscillation angle provides unrivaled speed of cut
  • Powerful 3.0 Amp motor provides 21 lbs of force behind each cut
  • Variable speed dial for precision control
  • 31 piece kit includes a variety of blades and sanding attachments for a wide range of applications
30 Day Guarantee
3 Year Warranty

Key Features

In a maximum cutting load capacity test, the Sonicrafter performed well above the competition with an astonishing 21lbs of force behind its cut. With the all new Sonicrafter, you can push harder & cut faster.
Sonicrafter 3.0 Amp Oscillating Multi-Tool - RK5121K | Rockwell
The Sonicrafter's Hyperlock tool-free blade design provides 1 ton of maximum clamping force to prevent blade slippage & ensure your accessories are securely in-place.
Rockwell’s unique Universal Fit System allows other accessories to fit tightly on our newly designed Sonicrafter. It doesn’t matter the brand, the model or the year purchased. No more driving across town to get the right blades.
Sonicrafter 3.0 Amp Oscillating Multi-Tool - RK5121K | Rockwell
Specs & Manuals
  • Voltage
  • Oscillation Speed
    11000~21000 opm
  • Oscillation Angle
  • Cord Length
    10 feet
  • Machine Weight
    2.9 lbs
  • Warranty
    3 Years
What's Included
  • (1) Sonicrafter 3.0 Amp Oscillating Multi-Tool with Hyperlock - RK5121K
  • (1) Sanding pad - RW8938
  • (26) Sanding sheets - RW9145
  • (2) 1-1/8" Standard wood end cut blade - RW8933
  • (1) Rigid scraper blade - RW8921
  • (1) Rockwell hard carrying case

Important Information

California proposition 65 WARNING:

This product can expose you to chemicals including lead, phthalate or bisphenol A which are known to the State of California to cause cancer, birth defects or other reproductive harm. Wash your hands after use. For more information go to

Proposition 65 de la Californie AVERTISSEMENT:

Ce produit peut vous exposer à des produits chimiques, incluant au plomb, au phtalate ou au bisphénol A, qui sont reconnus dans l'État de Californie comme pouvant causer un cancer, des anomalies congénitales ou d'autres dommages à l'appareil reproducteur. Assures-vous de bien vous laver les mains après usage. Pour en savoir plus, veuillez consulter le site

Propuesta de California 65 ADVERTENCIA:

Este producto puede exponerlo a químicos que incluyen plomo, ftalato, o bisfenol A que se sabe en el Estado de California que causan cáncer, defectos de nacimiento u otros daños reproductivos. Lave sus manos después de usarlo. Para más información visite
Sonicrafter 3.0 Amp Oscillating Multi-Tool is rated 4.3 out of 5 by 35.
Rated 5 out of 5 by from Works Good I've only used it a couple of times, but so far, so good.
Date published: 2018-01-21
Rated 5 out of 5 by from Very heavy duty durable tool. Should last longer than I do so I'll pass it along at some point.
Date published: 2017-11-12
Rated 5 out of 5 by from Best tool cheapest price Was skeptical on purchase being it was the cheapest tool with the most bits and it even came with a bag. It's quieter and more powerful than other ones and it is heavier and feels stronger. Only test I haven't done yet is the test of time!
Date published: 2017-10-24
Rated 5 out of 5 by from Easy to use, great tool! I bought this multi tool after watching my contractor use it. This tool is unbelievably versatile. The applications for use are endless. Cuts anything, removes grout etc.. Wow !
Date published: 2017-10-18
Rated 5 out of 5 by from Great tool at a great price. Does everything as expected. Alwayes pleased with the performance of your tools. Just wish there was a detachable side handle for better control. And a better assortment of blades in the kit would have been perfect.
Date published: 2017-08-02
Rated 5 out of 5 by from Right tool for the job I have used this tool to knock up mortar and glue from a concrete slab home. I also use the round-cut bit to make precise cuts under door trim. I am talking about this tool making EXACT cuts. As they say, you need the right tool for the job. This is it!
Date published: 2017-07-16
Rated 5 out of 5 by from Multi uses Great tool. Have used it to scrape windows and works great. A lot easier then a putty knife. Cuts door trim easily for tile to slide under trim. You don't have to pull door trim off to cut for length.
Date published: 2017-07-06
Rated 5 out of 5 by from super solid , easy blade chanes My oscillating tool from Harbor Freight died ,Thought I would give Rockwell a !!! No more harbor freight for this guy !Super quality, low vibration , low noise , its a brute !!!
Date published: 2017-04-22
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What are the mounting receiving threads on the bottom near the head for? Are they to mount a stabilizer?

Asked by: Bea Rose
The receiving threads on the bottom of the tool are to mount a stabilizer, but this attachment is only available in Europe.
Answered by: Rockwell Customer Care Te
Date published: 2020-02-10
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