Carbyne Tools 5 Piece Impact Adapter and Reducer Kit is Impact Grade - Engineer for use with impact wrenches/pneumatic tools - Made from chrome vanadium steel - for strength, durability and long life, has a black oxide coating - for corrosion resistance, including spring-loaded shut-off balls - securely holds base for easy work Includes adaptor: 1/4 inch (F) x 3/8 inch (M), 3/8 inch (F) x 1/2 inch (M) and 1/2 inch (F) x 3/4 inch (M). Reducers: 3/8 inch (F) x 1/4 inch (M) and 1/2 inch (F) x 3/8 inch (M). Meets or exceeds ANSI standards. Limited lifetime warranty.