Pro-Fit Common Nail, Exterior, Pro-Fit, 20D, 13/64 in Shank Diameter, 4 in Length, 13/32 in Head, 6 ga, Smooth Shank, Steel, ASTM A153 MaterialSpecification, Hot Dip Galvanized, For General Rough Framing and ConstructionFeaturesHot GalvanizedSize Pw Length In : 20D 4Pkg.