The spring-loaded ball detent on drive head locks sockets firmly in place, slipping or dropping during use Square drive corners reduce tool and socket wear for long-lasting stable Make of tool steel, it has high hardness and wear resistance, ensuring the long term service life of the product The heavy duty wound spring steel shaft provides flexibility for tight corners, narrow spaces, and angles where conventional ratchets extensions simply can ' t reach This extension rod fits all standard 1 / 2inch drive ratchets, impacts wrenches, and wrenches Ideal for automotive repair and professional mechanical work, Manufacturer: Laikoutd