... Tool Set 1.Material:Carbon steel or CR-V; 27 PC Mechanics Tool Set:• 1/4 in Drive ratchet handle,carbon ... /4, 5/16, 11/32, 3/8, 7/16, 15/32, 1/2,carbon steel,heat treatment,chrome-plated,• 8 pc Hex key ... wrench SAE - 1/16, 5/64, 3/32, 1/8, 5 ... /32, 3/16, 7/32, 1/4,• 8 pc Hex key wrench Metric - 1.5, 2, 2 ...