Roto-Kut mag-base frame drill and cutters Kimball Midwest's compact Roto-Kut mag-base frame drill measures 6-3/4" x 8-1/2" x 11-5/8", and drills behind the wheel to allow use in tight areas. In addition, it contains a powerful 120V, 8 amp, 450 rpm motor secured by an electromagnet with 1283 lbs. of pull on 3/8" thick steel. For added safety, the safety strap and the "on switch" must be continually depressed for operation. Roto-Kut M42 cobalt cutters resist high cutting heat and can be changed quickly and easily with twist and lock mounting. Available in a full line of standard and clearance sizes (1/16" oversize).