Extra large diameter head for extra clamping, perfect for fitting roofing felt and plasterboard. For medium duty rust protection Conforms to Eurocode 5 and service class 2" Shank Dia. mm: 3.00 Length mm: 30 Finish: Galvanised Material: Carbon Steel Approx. Pcs Per 1kg: 420Size 30 x 3.00 - 2.5 Kilograms Timco Extra Large Head Clout Nails - Galvanised in Silver