Stanley Proto JFC2500MA Proto 6-Piece Universal Disc Brake Caliper Set Universal brake caliper tool set assists in the replacement of pads on most vehicles with 4-wheel disc brakes Tool and adapters rotate brake pistons into calipers allowing clearance for newer, thicker brake pads Five disc sizes to fit most domestic and foreign vehicles Hex end threaded bolt pushes adapter into caliper; smooth operation with wrench or socket Rugged blow-molded case