"Designed to remove and install press-on type, belt-driven accessory pulleys found on most major domestic vehicle platforms","Applications include: GM Quad 4, GM 3.1L, and Ford 4.6L engines","Use on pulleys with grooved hub diameters of 1-1/8\", 1-1/4\", 1-5/16\" and 1-3/8\"","Includes components necessary to use on pumps with the common 3/8\"-16 threaded shaft","Also removes/installs GM belt-driven vacuum pumps and pressed-on water pumps pulleys on GM4 and 6 cylinders MASTER POWER STEERING PULLEY SET PSPS477 | Matco Tools