... Polished/Zinc coated Common Iron NailsAvailable in countersunk, checkered or plain head, diamond point, polished.Application: Common nails are used ... surface treatment mainly is Galvanized, include Plain and Twisted haulm.SpecificationTwisted or Plain haulmCap Diameter9# x 2-1/2, ... # x 1-3/4,2,1-1/2Twisted or Plain haulm15mmConcrete NailsMaterial: Carbon Steel, # 45 steelShank: smooth, grooved, ...