The Milwaukee 14-30-1110 Angle Grinder Gearcase Assembly provides the housing and support needed for the internal gears of compatible angle grinders. The gearcase holds the gear components in position and supports their movement during tool operation. This replacement assembly is designed to replace a worn or damaged gearcase during power tool maintenance or repair. Proper installatio... https://www.wholetoolbox.com/milwaukee-14-30-1110-angle-grinder-gearcase-assembly/14-30-1110.html