Socket Bit, 3/8 in. Dr, T10 Torx(R)/ OVERALL LENGTH: 1.719 INCHES NOMINAL BLADE LENGTH: 0.688 INCHES NOMINAL DRIVE SURFACE SIZE: 0.375 INCHES NOMINAL SINGLE END TIP SIZE DESIGNATION: T10 FEATURES PROVIDED: MANUAL TOOL AND WRENCHING SURFACE SHAPE: 6 POINT STAR SINGLE END EXTERNAL MATERIAL: STEEL OVERALL SURFACE TREATMENT: CHROMIUM DRIVE SURFACE SURFACE TREATMENT: OXIDE STYLE DESIGNATOR: 187G TORX