... one of the biggest factories which produce common wire nail, umbrella roofing nails, coil nail, building nails, screw nail, ... ISO9001 for our quality control for our customers each time. Umbrella roofing nail 1) Product Specifications: 8G, 9G, 10G, ... Surface treatment: Polished, electro galvanized, hot-dip galvanized7) Description: umbrella head, smooth body, twist body8) Package: Bulk packing; carton, ...