Large diameter head, perfect for attaching roofing felt, slate and shingles. Approx. Pcs Per 1kg620Corrosion 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 mm265 x 152 x 50Pack Weight kg1.010Product CodeCOP230BShank Dia. mm2.65Size mm30 x 2.65SubstratesRoofing Felt, Slate, ShinglesWeight kg1.0.