Impact socket set made of the finest quality SAE 4140 chrome molybdenum high impact steel. TORQUE DRIVE® socket design contacts the fastener on the sides instead of the corners, reducing fastener rounding and allowing up to 20% more torque. Chamfered edges allow easiest socket placement on fastener, increasing productivity and reducing frustration. Extra long deep sockets ensure maximum accessibility. Most sets come with two-tone blow mould case with removable lid for use as an organizer. Meets or exceeds US Federal specs GGG-W-660A and ANSI specifications. Blow mould case with removable lid. Includes 3/4, 13/16, 7/8, 15/16, 1, 1-1/16, 1-1/8, 1-3/16, 1-1/4, 1-5/16, 1-3/8, 1-7/16, 1-1/2, 1-9/16, 1-5/8, 1-11/16, 1-3/4, 1-13/16, 1-7/8, 1-15/16, 2 inch deep length.