A pneumatic tool designed to deliver high torque output with minimal exertion by the user, it uses compressed air to power a rotary motor, which then delivers powerful, intermittent blows to a fastener. A common application involves rapidly tightening or loosening nuts and bolts, especially where significant force is required. For instance, technicians frequently employ it when servicing automotive components that are heavily secured.
This type of wrench offers significant advantages in situations demanding robust power and efficiency. It dramatically reduces the manual effort required for tightening and loosening stubborn fasteners, increasing productivity and minimizing worker fatigue. Historically, these tools have revolutionized industries such as automotive repair, construction, and manufacturing by significantly improving assembly and maintenance operations, leading to greater speed and accuracy.