Master Mechanic, 21 Degree Full Head Framing Nailer, Aluminum Magazine With Strip Loading, No-Mar Pad Protects Work Surface, Dual Triggers For Single & Contact Firing, Tool Free Depth Adjustment, 360 Degrees Adjustable Exhaust Port Directs Exhaust Away From Your Face, 1 Piece Hardened Steel Drive Blade, Die-Cast Magnesium Construction Is Lightweight, For Wall Framing, Sub-Floors, Roof Decking, Basement Remodeling, Fencing Construction, Pallet Building & Outdoor Projects, Dust Cap For Clean Operation,, Uses 21 Degree Round Head Plastic Collated Framing Nails Ranging 2" To 3-1/2" In Length.