59, Alloy Steel, Black Oxide.Wright Tool Box End Wrench, Heavy Duty Striking Face, Measurement System: Imperial, Offset Wrench, 1-13/16 in Wrench Opening, 12 Points, 12-1/2 in Overall Length, 45 deg Offset, 2-7/8 in Box End Width, 1-1/8 in Box End Thickness, Specifications Met: ASME B107.