No more hassle. Tools Changed In Seconds.

Wrenches Not Needed

Once you have it, you would not like to be without it.


Musclechuck Size : 1/2 in
Setting Ring Sizes : 1/8 in, 1/4 in, 3/8 in, 1/2 in, 6 mm, 8 mm, 10 mm (custom sizes available upon request)
Collet Reducer Sizes : 1/8 in, 3/16 in, 1/4 in, 5/16 in, 3/8 in, 6 mm, 8 mm, 10 mm (custom sizes available upon request)
Cap Screw : 5 mm Grade 8
Warranty : 30-day money-back guarantee, including shipping & handling
Nut Torque Max : 12 ft-lbs
Cap Screw Torque Max : 125 in-lbs
Slip Torque : 435 in-lbs (approx.)
Mechanical Advantage : 3.5/1 (approx.)
Certifications : (1) all materials and processes are certified to aircraft standards and are available upon request; and (2) each Musclechuck™ assembly is measured and tested for compliance. Specials or Modifications: If your router model is not listed on our site, please contact us for modifications/custom orders.

Disclaimer: Power tools and their accessories, such as the “Musclechuck™” assembly, should only be used for their intended purpose by users experienced in their operation. Careless handling or misuse may result in serious injury or death. Failure to follow the enclosed directions is a misuse of the “Musclechuck™” assembly. The user must always make sure that the cutter is secure in the chuck, especially when a reduction collet is being used BEFORE turning on the router.