For reliability, comfort and durability, you can depend on this Bostitch PneumaticCoil Roofing Nailer (RN46-1). It has a lightweight magnesium housing, a quick set adjustable depth guide and a patented single-action side load canister. This nailer also has a dry-fire lock out feature which helps prevent you from dry firing. The nose piece has carbide inserts which help to increase the longevity of the nailer. You'll appreciate the quick-set adjustable depth guide as it sets nails to your desired depths quickly and conveniently.