Used for securing insulation to wood. For medium duty rust protection Conforms to Eurocode 5 and service class 2" Shank Dia. mm: 4.50 Length mm: 200 Finish: Galvanised Material: Carbon Steel Approx. Pcs Per 1kg: 36 Timco Slab Nails - Galvanised (Size 200 x 4.50 - 1 Kilograms) in Silver