Is a type of fastening tool that circulates self contained hydraulic fluid, and powered by your shop air, to drive rivets. These tools are commonly used in industrial and construction applications. Pneudraulic rivet guns work by using 90-100 psi air source to power the tools. The compressed air is the power source used to drive the piston, which in turn swages the collar onto the rivet clamping the materials being joined. The collar is then swaged onto the rivet or lockbolt, locking it in place and providing a strong, durable, and permanent hold. They are lightweight, efficient and compatible with a wide range of rivets, making them easy to use and maneuver.