Product features Internal strong magnet that stably adsorbs the batch head to it from falling off ; use four square shaft ; efficient disassembly and assembly functions ; high temperature quenching , high hardness and wear resistant chromium steel alloy forging Important selling point High forging with high concentricity and precise size matching expression This product is a great addition to your toolkit if you are an efficient way to use your electric wrench for drilling / twisting / wrenching functions Usage scenario Can be used for drilling / twisting / wrenching functions User group People who use electric wrenches, Manufacturer: Watreketal