Common iron nails Countersunk, Checkered Head, Diamond Point, and Treatment: electric galvanized or polished. Specification: 1/2", 5/8", 3/4", 7/8", 1", 1-1/2", 2"-6" Galvanized roofing nails with umbrella head Treatment: electric galvanized£¬ Shank: Plain or twisted Specification Shank: BWG8---BWG12 Length: 1.5"---3" Concrete nail Checkered Head, Diamond Point, treatment: electric galvanized Specification: 1", 1-1/2", 2", 2/1/2", 3"-6"