Quality: High density material with good durability and high impact resistance, easy to use. Adjustable: 1/2" square or 1/4" hex quick-load adapter and can be used with power tools. Innovation: Extended shank for easy replacement of bit and sleeve, stable clamping for easy use. Advantages: One-handed exchange is allowed during operation, and the adapter firmly holds any 6.35mm hex handle. How to use: Converts the wrench to air or power shock into a drill or ratchet into the engine.