H1Z, Hurricane Tie Z-Max, Connects Trusses & Rafters To Top Plate, Designed To Help Counter The Effect Of High Wind & Seismic Events On A Structure, Provides Resistance To Uplift & Lateral Forces, Can Be Installed With Flanges Facing Inwards, Z-Maximum Galvanized For Extra Corrosion Resistance, Install With Six 8D x 1-1/2" Nails & Four 8D Nails.