Premium Internal Star Socket: 1/4 in. drive T25 6-point internal star socket for professional and industrial applications Lifetime Warranty: Backed by SUNEX Tools lifetime warranty with no exclusions CR-MO Alloy Steel: Constructed from high-strength chrome molybdenum alloy steel for maximum durability under high-torque impact use 6-Point Design: Six-point geometry provides maximum contact with fastener flats, reducing rounding and delivering superior torque transfer Dual Size Markings: Features high-visibility laser-etched markings for quick identification even in low-light conditions Precision Fit: Machined to exacting tolerances for secure fastener engagement and reduced slippage Impact Rated: Designed specifically for use with impact wrenches and pneumatic tools Black Phosphate Finish: Industrial black phosphate coating provides excellent corrosion resistance for long service life Performance & Safety: Designed and manufactured to meet or exceed ANSI and ASME standards for impact sockets ensuring reliable, safe performance