Features: The independent pin-hole base design adds security and works with a pin and O-ring system to ensures secure retention of the socket. Also works perfectly with wrenches using friction rings or detent Labor saving wrench. Phosphating Process --- The black phosphate finish protects the hex bit key socket from rust and corrosion, absorbs and retains oil, and repelling moisture. Chrome Molybdenum Steel (CR-MO) --- Hex Bit Socket is crafted from strong Chrome Molybdenum (CR-MO) Steel. After heat treatments and forging, it has high hardness and good toughness. Useful Tips --- Avoid using excessive force, as it may cause damage to the socket, fastener, or tool. Regularly inspect the socket for signs of wear or damage, and replace it if necessary. Specifications: Driver Size: 1/2 Inch Bit Size: H8 (8mm) Total Length: 78mm / 3.07 Inch Bit Length: 55mm / 2.15 Inch Material: Chrome Molybdenum Steel (CR-MO) Finish: Chromed Plating, Phosphating Process Wide Applications Package Includes: 1Set Strong Magnetic Sleeve note: Color might be slightly different due to the color calibration each individual monitors. Please allow slightly measuring due to manual measurement.