Made with Eklind alloy steel that has been heat treated for optimum strength and ductility with a black finish to resist rust and a ergonomic handle. Includes the following 3 sets: (9) piece hex key, inch sizes,.050, 1/16, 5/64, 3/32, 7/64, 1/8 , 9/64, 5/32, and 3/16, (7) piece metric hex key, MM Sizes: 1.5, 2, 2.5, 3, 4, 5, and 6, and (8) piece torx sizes:T8, T10, T15, T20, T25, T27, T30, and T40. Carded