Ridgid R350CHD 3-1/2-Inch Clipped Head Framing Nailer Powerful motor  drives 3-1/2 inch framing nails Rear loading magazine with by-pass pusher  for quick 2-step reloading Dry-fire lockout feature  extends motor life and prevents missing nails Aggressive toe-nailing claw  reduces slipping during angled nailing No-mar pad  keeps work surface clean of tool marks