TrueSpec HZB34162 Tree Island 3-1/2 x .162" Smooth Hot Galvanized Framing Nails TrueSpec Nail Identification system improves job site communication and insures that correct fastener is used Head ID - K6 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