The RIDGID 3-1/2 in. Palm Nailer is compatible with 4d - 16d common bulk nails 1-1/2 - 3-1/2 in. long and has a magnetic guide for accurate positioning. It is ideal where space prevents hammer swings or the use of bulkier tools. It operates at 50 - 120 psi pressure and has enough power to drive a 3-1/2 nail into solid wood. This tool features a compact aluminum body with a zinc top and comfortable, adjustable hand strap.