1.Material :Q195/Q235 2.Surface Treatment: Bright, E.G, HDG, V.C, C.C, P.C and so on 3.Head: Flat Head Insulation nailsMaterials: Carbon steel, aluminum, tinplate and plastic. Manufacturing methods: Automatic machining and injection.Specifications: 3-10cm in length. The base plate is in diameter 3m or 4.2cm. Sizes can be custom made. Insulation nails