The PTIA Award-Winning SCN51, which drives up to a 2" nail is perfect for a wide range of siding applications. This tool drives smooth, ring, and screw shank coil nails in both wire and plastic sheet collation. The weight of this tool is significantly lighter than that of regular 65mm (2-1/2") siding nailers, which makes the SCN51 an attractive alternative for construction professionals who don't use full 65mm (2-1/2") nails.