High output compressor with cast iron pump, Big Bore cylinder and piston, combined with greater bore and stroke, delivers maximum performance. Brad nailer uses standard 18-gauge brads from 5/8in. to 2in. CFM at 90 PSI: 3.3, Max. PSI: 130, Volts: 115, HP: 2, Air Tank Size (gal.): 2.6, Tank Description: Horizontal, Pump: Cast iron cylinder, oil-lubricated, Air Outlet Size (in.): 5/8, Portable or Stationary: Portable