FEATURE: No Point, Blunt Diamond Point, Diamond Point, Screw Shank or Ring Shank ROOFING NAIL STANDARD: DIN GB SPECIFICATION: Diameter: 2.2-6mm Length: 15-200mm MATERIAL: High-quality Carbon-Steel Q235 1022A FEATURE: No Point, Blunt Diamond Point, Diamond Point, Screw Shank or Ring Shank FINISH: Polished, Electric Galvanized, Heat Treated Galvanized, black finished PACKING: According to customer' ...