cupper nails a) Diameter: 3.76mm, 3.8mm, 3.9mm b) Length: 65---120mm c) Material: Carbon iron cupper nailshot dip galvanized roofing and umbrella head roofing nails(1) 3.76mm, 3.8mm, 3.9mm (2) Length: 65---120mm(3) Material: Carbon iron(4) Applications: Construction, shipbuilding, machinery, automobile manufacture, household and so on.(5)Delivery date:usually within 20 days