The Pulley Puller and Installer Kit is great tool for removes and install power steering pump pulleys of most domestic vehicles, fits pulley hubs with diameters of 1-1/8 inch, 1-1/4 inch, 1-5/16 inch and 1-3/8 inch. This tool set contains each of steering pump remover, Pump pulley installer (with 3/8”x16/8mm x1.25 bolt screw), collar retaining, 3/8”x16 bolt screw, pressure screw extended, power steering pulley spacer, and set of collar halves with the adapters for several different vehicle models: GM 2.3L Quad 4 four-cylinder engines; GM 3.1L, 3100, 3400, and 3800 V6 engines.