The Senco FramePro 325FRHXP 3 1/4 Inch Full Round Head Framing Nailer packs plenty of power and won't leave you fatigued at the end of the day. Drives ring, screw, and smooth-shank full round head nails for tough fastening jobs. TrueDrive magazine - Reduces jams and mis-feeds. Highly efficient internal design, means less wear and tear on the compressor. Aggressive toenail safety. Fits easily between studs and joists.