This Sunex 1/4 inch heavy duty rivet gun sets all conventional, structural blind rivets and all structural blind rivets, mono bolts and t-rivets up to and including 1/4in. diameter in all materials. it features a pulling (traction) power of 3,960 lbF @ 90PSI and forged aluminum handle. Blow molded storage case included. Specifications: air pressure (psi) 70-100, stroke length (in.) 3/4, height (in.) 12-3/8, weight (lbs.) 5.57, min. hose size (i.d.) 3/8, air inlet size (npt) 1/4.