The combination wrench set includes 5/16 in, 3/8 in, 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 sized wrenches in a storage case. The set is made of drop forged, chrome vanadium steel. The torque and hardness meets or exceeds ANSI Specifications B107.6.