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, 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.