Cougar Pro Standard Socket Set, Number of Pieces: 16, Drive Size: 1/2 in, Number of Points: 6, High Alloy Steel, Consist Of: 7/16 in, 1/2 in, 9/16 in, 5/8 in, 11/16 in, 3/4 in, 13/16 in, 7/8 in, 15/16 in, 1 in, 1-1/16 in, 1-1/8 in and 1-1/4 in Size Standard Socket, Quick Release Oval Head Ratchet, 6 in Extension, 10 in Extension, Meet ASME B107.1 and ASME B107.10.