... MATERIAL: High-quality Carbon-Steel Q235 1022A FEATURE: No Point, Blunt Diamond Point, Diamond Point, Screw Shank or Ring Shank FINISH: Polished, Electric Galvanized ... , Galvanized Roofing Nails, Galvanized Concrete Nails, wood screws, self-drilling screw, chipboard screws and so on. roofing nails