Hitachi NR90GC2 2-Inch to 3-1/2-Inch Clipped Head Cordless Gas Framing Nailer Gas power allows complete portability through elimination of air hose and compressor Dry-Fire lockout prevents accidental dry-fire and assures nails are lodged securely Rear mounted battery provides superior balance to reduce user fatigue Adjustable depth of drive to assure proper nail down with varying materials Comes with a 1-year limited warranty Well balanced and lightweight (only 7.7 lbs) reducing user fatigue Battery will fire over 4,000 nails per charge and each fuel rod fires 1,200 nails NR90GC2 fires up to 3-1/2 inch x .131 clipped head nails to offer maximum flexibility and versatility on the job Holds37-47 nails with a six nail lock-out to prevent "dry fire" and assure fastening Low battery indicator light alerts the user of battery status