Premium Standard Socket: 1 in. drive 13 in. 6-point standard impact socket for professional and industrial applications 6-Point Design: Six-point geometry provides maximum contact with fastener flats, reducing rounding and improving torque transfer CR-MO Alloy Steel: Constructed from high-strength chrome molybdenum alloy steel for maximum durability and resistance to high-torque impact forces Impact Rated: Designed specifically for use with impact wrenches and pneumatic tools for high-torque fastening Radius Corner Design: Engineered radius corners grip fastener flats instead of corners, reducing rounding and improving torque transfer Precision Fit: Machined to exacting tolerances for secure fastener engagement and reduced slippage during operation Dual Size Markings: Features high-visibility laser-etched markings and permanent stamped size markings for quick identification in any environment Black Phosphate Finish: Industrial black phosphate coating provides excellent corrosion resistance for extended service life. Backed by SUNEX Tools lifetime warranty Performance & Safety: Designed and manufactured to meet or exceed ANSI and ASME standards for impact socket tools ensuring reliable and safe performance