Milwaukee® 8 mm X 22 mm X 7 mm Ball Bearing is designed for power units, 1/4"& 3/8" T.S.C reversing hole shooter, small, large pad orbital sanders, electric drills, magnum two speed hammer drill, screw gun, jig saws, drain cleaner, reversible heavy-duty drain cleaner, cordless drills/drivers, electric drills/drivers, O. E. M. drain cleaner, rotary hammers, 16 ga nibblers, drill press, 1/2" reversing compact drills, 1/2" keyless chuck hole shooter, 12 V 3/8" cordless drill, 1/2" & 3/8" T.S.C reversing piston drill, 18 ga swivel head shears, 1/2" &1/4" magnum hole shooters, 240 V D.I 1/2" magnum hole shooter, 1/2" reversing compact drills and 240 V 1/2" reversing compact drill.