General use with full round head for clamping. For medium duty rust protection Conforms to Eurocode 5 and service class 2" Shank Dia. mm: 4.00 Length mm: 90 Finish: Galvanised Material: Carbon Steel Approx. Pcs Per 1kg: 105 Timco Round Wire Nail - Galvanised (Size 90 x 4.00 - 2.5 Kilograms) in Silver