The Bostitch F33PT runs clipped-head framing nails, a design that packs fasteners closer together in the magazine so you get more nails per load. The rear-load magazine holds up to 80 nails at a time, which keeps framing crews moving through studs, sheathing, and subfloor without stopping every few minutes to reload. It's built to handle fasteners from 2 inches up to 3-1/2 inches, covering most standard framing tasks from toe-nailing to full wall assembly.It operates on 80 to 120 PSI, giving some room to match it to whatever compressor is on hand. At 7.9 lbs, it's light enough to swing repeatedly through a full day without wearing down the arm. This version comes as a kit, ready to put to work. It's built for framers who need a tool that keeps pace on volume jobs. Fastener type: Clipped Head framing nails Fastener size range: 2 inch to 3-1/2 inch Magazine capacity: 80 nails, rear-load design Operating pressure range: 80-120 PSI Tool weight: 7.9 lbs Sold as a kit