Used for securing insulation to wood. For medium duty rust protection Conforms to Eurocode 5 and service class 2" Shank Dia. mm: 3.75 Length mm: 125 Finish: Galvanised Material: Carbon Steel Approx. Pcs Per 1kg: 71 Timco Slab Nails - Galvanised (Size 125 x 3.75 - 10 Kilograms) in Silver