Roofing nails with umbrella head, finished by galvanized. size BWG9X2", BWG12X2";BWG13X1.75" Roofing nails with umbrella head,Finished: galvanized.Shank: smooth shank, twist shank.Size: WG9X2.5", BWG12X2";BWG13X1.75" ......Package: carton or wooden case.