The SUNEX Tools 3/8 inch Drive 9/16 inch Hex Bit Impact Socket, Model 36478, is engineered for professional and industrial applications requiring reliable torque transfer and durability. Constructed from high-strength chrome molybdenum alloy steel, this socket is designed to withstand the demands of high-torque impact use. Its 6-point hex bit design ensures maximum contact with fastener flats, reducing the risk of rounding and enhancing torque efficiency. The socket features a black phosphate finish that offers excellent corrosion resistance for extended service life. Precision machining to exacting tolerances provides a secure fit on fasteners, minimizing slippage during use. This impact-rated socket is suitable for use with impact wrenches and pneumatic tools, meeting or exceeding ANSI and ASME standards for performance and safety. For ease of identification, the socket includes high-visibility laser-etched dual size markings that remain clear even in low-light conditions. Backed by the SUNEX Tools lifetime warranty with no exclusions, this socket is a dependable addition to any tool collection.