A Composite Air Impact Wrench is a pneumatically powered torque tool designed for tightening and loosening bolts, nuts, and fasteners with high torque output. It maintains a lightweight and ergonomic design thanks to its composite (fiber-reinforced) housing. It operates by using compressed air to drive a rotary impact mechanism (usually twin-hammer, jumbo-hammer, or pin-clutch) that delivers rapid, high-energy blows to the output shaft — producing strong rotational torque with minimal reaction force. Composite air impact wrenches are widely used in automotive repair, heavy equipment maintenance, assembly lines, and industrial production, where power-to-weight ratio, operator comfort, and durability are critical.