【High-quality CR-MO】Made of drop forged, heat treated chrome molybdenum steel, Provides the strength and flexibility to handle high torque impact tools 【Set Include】Set include(SAE/ Shallow): 1/2"Dr. 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 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" 【Design】Radius corner design, High-torque, 6-point opening grips flat sides of fasteners, not corners, preventing round-off 【Laser Marking 】High-contrast size marking is permanently laser etched and easy to read, even in low light. 【Service Guarantee】All MIXPOWER Tools meet or exceed ANSI performance standards. It comes with 1 year quality guarantee. This MIXPOWER 19 Piece 1/2-Inch Drive Standard Impact Socket Set, SAE, Shallow, 3/8" to 1-1/2", Cr-Mo Alloy Steel, Radius Corner Design, Impact Grade. It is made of drop forged, heat treated chrome molybdenum steel, Provides the strength and flexibility to handle high torque impact tools. Set include(SAE/ Shallow): 1/2"Dr. 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 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". The Radius corner design, High-torque, 6-point opening grips flat sides of fasteners, not corners, preventing round-off. High-contrast size marking is permanently laser etched and easy to read, even in low light. All MIXPOWER Tools meet or exceed ANSI performance standards. It comes with 1 year quality guarantee.1/2“Dr. Set includes(SAE/ shallow): 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 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.