Socket Bit, Insert Length 3/4 in, Replaceable Insert No, SAE, Tip Size 3/16 in, Tip Style Hex/ OVERALL LENGTH: 1.812 INCHES NOMINAL BLADE LENGTH: 0.750 INCHES NOMINAL WRENCHING SURFACE SIZE: 0.188 INCHES NOMINAL SINGLE END DRIVE SURFACE SIZE: 0.375 INCHES NOMINAL SINGLE END FEATURES PROVIDED: MANUAL TOOL AND WRENCHING SURFACE SHAPE: HEXAGON SINGLE END EXTERNAL MATERIAL: STEEL OVERALL SURFACE TREATMENT: CHROMIUM DRIVE SURFACE SURFACE TREATMENT: OXIDE