TrueSpec HZB30131P Tree Island 10D Framer 3" x .131" Zincgard Hot Galvanized Framing Nails TrueSpec Nail Identification system improves job site communication and insures that correct fastener is used Head ID - F3 Zinc Gard Hot Dipped Galvanized meets or exceeds ASTM A 153 Class D standard Recommended for use in ACQ or Treated Lumber Made In North America