Product Overview Drive Size: ⅜″ Square Drive – Fits Standard Ratchets And Impact Tools. Socket Size: 11⁄16″ Sae Universal Profile – Adapts To Hex, 12-Point, Square, And Many Fastener Types. Design: Universal Internal Mechanism (Sprung Steel Lobes) Grips A Variety Of Fastener Shapes Securely. Intended Use: Often Used For Bolt Heads That Have Been Rounded Or Damaged, Or When You’Re Dealing With Mixed Fastener Types. Construction & Durability Material: Likely Made From Chrome‑Vanadium Or Chrome‑Molybdenum Steel, Built To Withstand Moderate Torque. Finish: Typically Features A Black Phosphate Or Oxide Finish For Corrosion Resistance And To Indicate Impact Readiness. Retention: Includes A Spring-Ball Detent In The Drive End To Hold It Firmly On The Ratchet Or Extension. Benefits & Comparison Versatility: Combines Multiple Socket Types Into One, Great For Varied Fasteners Or Emergencies. Convenience: Avoids Carrying Multiple Sockets; Useful On-The-Fly. Note On Precision: Won’T Grip As Cleanly As Size-Specific 6-Point Sockets—Best For Quick Access, Not Precision Torque Work. Impact Use: If Rated For Impact (Black-Coated), It'S Suitable For Light Impact Tools—But Performance Won’T Match Standard Impact Sockets.