Pneumatic Wrench

A pneumatic wrench (also called an air impact wrench or air gun) is a power tool that uses compressed air to tighten or loosen nuts, bolts, and fasteners quickly and with high torque. Pneumatic wrench Main components Air motor Trigger switch Hammer and anvil mechanism Air inlet connection Socket drive (commonly 1/2", 3/4", or 1") Forward/reverse control How it works The tool connects to an air compressor through a hose. Compressed air spins an internal motor, which drives a hammer mechanism that delivers strong rotational impacts to loosen or tighten fasteners.