Milwaukee® Needle Bearing measuring 0.37" X 0.56" X 0.31" is designed for saw, sander, grinder, circular saw, worm drive circular saw, band file, saw motor, random orbit sander, jig saw, rotary hammer, D.I. sander-grinder, angle grinder, saw motor, two speed band saw, circular saw with tilt-lok handle, D.I 6000 RPM dial speed sander and 5 1/2 A 10000 OPM random orbit sander.