The Surbonder 21 Round Head Framing Nailer is an excellent tool to have on hand to use on framing, sheathing, subflooring, roof Decking, siding, decking, fencing and more The Model 9772 has a lightweight, rugged cast aluminum construction, sawtooth feature digs in for precision toenailing, contact mechanism prevents accidental firing, adjustable depth drive, adjustable air exhaust, plus a high-impact carry case. Air Consumption CFM 2.45, Fastener Capacity Per Strip 80, Tool Weight lbs. 8.4, Case Included Yes, Min. Hose Size in. 1/4, Fastener Sizes in. 2-3 1/2, Tool Length in. 21.65, Coil or Strip Strip, Operating PSI 80-100, Adjustable Depth Control Yes, Inlet Size in. 1/4, Fasteners Used Round head nails. Sequential or bump fire