General use with full round head for clamping. Manufactured from A2 Stainless Steel offering superior corrosion resistance, perfect for external applications. Stainless steel must be used where there is corrosive environment and/or the base material has inherent corrosive characteristics e.g. Green Oak. A2 stainless steel for external applications Conforms to Eurocode 5 and service class 3" Shank Dia. mm: 4.50 Length mm: 100 Material: Austenitic Stainless Steel (A2-304) Approx. Pcs Per 1kg: 100 Timco Round Wire Nails - Stainless Steel (Size 100 x 4.00 - 1 Kilograms) in Silver