An impact wrench is a powerful portable tool used to tighten or loosen bolts and nuts. It is mainly used in car repair, machinery assembly, construction, and industrial fields. An impact wrench has a motor that generates rotational force and suddenly drives a bolt or nut with a very fast and strong torque. As a result, the user can work quickly with less effort. An impact wrench is usually powered by petrol, electric, or air power (pneumatic). Its design is made in such a way that there is less vibration and less fatigue in the user's hands.
Since the torque of the bolt turned with the help of an impact wrench is very strong, the correct torque can be controlled. It is especially useful in removing or installing car wheels, connecting heavy parts, and other cases where the bolts are very tightly attached. The demand for impact wrenches in the industrial and car repair industry of Bangladesh is increasing day by day, because they increase the speed of work and reduce the labor of workers. Therefore, it is considered an indispensable tool.