Introduction: This 13-piece product is used to remove and install alternators, power steering pumps and other pulleys on late General Motors, Ford and Chrysler engines. Fits most domestic cars and trucks, GM 3.1. Comes with adapters for typical and unique style pulleys, reversible split jaws for easy access to pulley flanges, and reversible split collecting jaws to clamp the pulley flange without damaging the pulley. And comes with a plastic box for easy storage and use. Suitable for most domestic cars and trucks, fits 1-1/8", 1-1/4", 1-3/8", 1-5/8" pulley axles, tapping jack screws: 5/8"- 18, GM 3.1. Not suitable for 3.3L and 3.5L Chrysler engines. .