Socket Bit, Replaceable Insert No, SAE, Tip Size #3, Tip Style Phillips/ OVERALL LENGTH: 2.500 INCHES NOMINAL DRIVE SURFACE SIZE: 0.500 INCHES NOMINAL SINGLE END TIP SIZE DESIGNATION: 3 FEATURES PROVIDED: MANUAL TOOL WRENCHING SURFACE SHAPE: PHILLIPS (CROSS) SINGLE END EXTERNAL MATERIAL: STEEL OVERALL STYLE DESIGNATOR: 187E PHILLIPS SUPPLEMENTARY FEATURES: INDUSTRIAL QUALITY (IQ) TOOLS PROGRAM ITEM