Large diameter head, perfect for attaching roofing felt, slate and shingles. Approx. Pcs Per 1kg380Corrosion Rating3 - Urban & industrial areas with a low salt atmosphereDescriptionLarge diameter head, perfect for attaching roofing felt, slate and shingles. Head TypeRoundLength mm30MaterialCopperPack Dimensions L x W x H mm282 x 206 x 298Pack Weight kg25.100Product CodeCOP330Shank Dia. mm3.35Size mm30 x 3.35SubstratesRoofing Felt, Slate, ShinglesWeight kg25.