The 7185 tool removes pulleys on most Chryser Ford GM and VW vehicles including Saginaw Thompson and the Ford C2 power steering pumps; GM belt-driven vacuum pumps on both gas and diesel cars; and press-on water pump pulleys on GM 4-cylinder and V6 engines. The 7185 works on pulleys with hub diameters of 1 1/8in. 1 1/4in. 1 5/16in. and 1 3/8in. With split collet design the jaws grip the pulley flange for damage-free removal. Mechanical screw power does the actual pulling.