Large diameter head, perfect for attaching roofing felt, slate and shingles. Approx. Pcs Per 1kg230Corrosion Rating3 - Urban & industrial areas with a low salt atmosphereDescriptionLarge diameter head, perfect for attaching roofing felt, slate and shingles. Head TypeRoundLength mm50MaterialCopperPack Dimensions L x W x H mm265 x 152 x 50Pack Weight kg1.010Product CodeCOP350BShank Dia. mm3.35Size mm50 x 3.35SubstratesRoofing Felt, Slate, ShinglesWeight kg1.0.