... 2.Zn coated:6-9g/m2 3.Length:1"-4" 4.Packing:25kg/box All NailsDescriptionMaterialSizesPackingConcrete Steel NailsQuality steel, Head ... , electro galvanizedsurface finish: bright zinc plated1,1-1/4,1-1/2,2, 2-1/2,3, ... pointSmooth or ring shankSurface treatment:zinc plated, self-color3/4 up to 3-1/2Diameter: 20mm to 80mmIn ... special concrete nails45# SteelSurface: Black Oxide1,1-1/4,1-1/2,2, 2-1/2,3, 3 ...