#3, Phillips ACR, Insert Bit, 1/4 in Hex Shank Size/ OVERALL LENGTH: 1.000 INCHES NOMINAL SHANK WIDTH ACROSS WRENCH FLATS: 0.250 INCHES NOMINAL TIP TYPE: PHILLIPS CROSS TIP SIZE DESIGNATION: 3 DRIVE SHANK TYPE: HEXAGON FEATURES PROVIDED: MANUAL TOOL AND ANTI-CAM-OUT RIBS ON TIP SPECIFICATION/STANDARD DATA: 05047-ASME B107.600/B107.26 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD NONDEFINITIVE SPEC/STD DATA: 2 TYPE