Material: Made of high-density steel with good durability and high impact resistance, easy to use Adjustable: 1/2 inch square to 1/4 inch hexagonal quick-load adapter, compatible with power tools Innovation: Extended post design allows easy bit and sleeve replacement, provides stable clamping for smooth operation Advantages: Hex shank socket adapter enables one-hand bit exchange during operation; securely holds any 1/4 inch hex shank To use: Converts air or power impact wrench into a drill or ratchet wrench drive Type: 1/2-Inch Drive to 1/4-Inch Hex Compatible Bit: 1/4 inch Hex Shank Color: Black Material: Steel Size: Length: 50mm, Rear Diameter: 12.5mm, Front Diameter: 6.35mm Package Contents: 4 x Hex Shank Converter Note: Light and display differences may cause slight color variation between image and actual item. Measurement allowance: +/- 1-3cm.