General use with full round head for clamping. For medium duty rust protection Conforms to Eurocode 5 and service class 2" Shank Dia. mm: 4.50 Length mm: 100 Finish: Galvanised Material: Carbon Steel Approx. Pcs Per 1kg: 77 Timco Round Wire Nails - Galvanised (Size 100 x 4.50 - 2.5 Kilograms) in Silver