The Steel Force ANR25 1/4" Heavy Duty Air Riveter//Pneumatic Hydraulic Rivet Gun is designed for heavy duty industrial application of rivets up to 1/4-inch. Specifications: Rivet Capacity: 1/4-inch, Overall Length: 10-7/8-inch (280mm), Net Weight: 3-1/2-pound (1.6kg), Pulling Force 2,646 pounds, Air Inlet 1/4-inch NPT, Air Hose I.D. Size: 3/8-inch (10mm), Avg. Air Consumption.: 4 CFM, Air Pressure: 90-120psi.