Milwaukee 48-66-3280 Chuck Key for Chucks 48-66-1360, 48-66-1370, and 48-66-1381
This chuck key tightens the jaws of the 1/2 inch capacity chuck 48-66-1360, 48-66-1370, and 48-66-1381.  Key holder 48-66-4040 should be used to attach this chuck key to the cordset.