This heavy-duty pneumatic rivet gun is designed for efficient installation of a variety of blind rivets, including commercial, conventional and structural, as well as mono bolts and T-rivets. The rivet gun can be operated in any position with one hand. Key Product Specs Working Pressure (PSI) 90 Rivet Size (in.) 1/4 Air Inlet Size (in. NPT) 1/4 Additional Product Specs * Rated pull load of 3960 lbs. @ 90 PSI * Sets rivets up to 1/4in. dia. in all materials