Armstrong 22-056 1-Inch Drive 6 Point 1-3/4-Inch Impact Socket Thin wall design with precise fastener end dimensions meet industrial specifications Radius corner design provides 15-20-Percent more torque which extends fastener life and reduces slippage Large EYE-D size markings ease identification and provide SAE/Metric differentiation Lifetime Warranty Proudly made in the USA with a lifetime warranty