Used for exterior applications to attach round, welded, or barbed wire fencing to wood postsFeatures Also used to attach insulation and to fasten suspended ceilings to wood framing using wire Length is measured from the underside of the crown center to the end of point Recommended for exterior use and with treated lumber Nails conform to ASTM F1667 and ASTM C514 if applicable Hot dipped galvanized nails conform to ASTM A153 Specifications Hot Dipped Galvanized Diamond Point Smooth Shank Type: 9 ga Fencing Staples 1-1/4"