Material: Made of high-density steel material with good durability and high impact resistance, easy to use Adjustable: 1/2 inch square drive to 1/4 inch hexagonal fast load adapter, compatible with various power tools Extended post design allows for easy bit and sleeve replacement, provides stable clamping for smooth operation Features one-hand quick-change function; securely holds any 1/4 inch hex shank bit during use Converts 1/2 inch drive tools into 1/4 inch hex shank tools, ideal for use with impact wrenches, drills, or ratchet wrenches Type: 1/2-Inch Drive to 1/4-Inch Hex Compatible Bit: 1/4 inch Hex Shank Color: Black Material: Steel Dimensions: Length: 50mm, Rear Diameter: 12.5mm, Front Diameter: 6.35mm Package Contents: 4 x Hex Shank Converter Note: Product color may slightly vary due to lighting and monitor display settings. Measurement tolerance: +/- 1-3cm