umbrella roofing nail 1) Product Specifications: 8G, 9G, 10G, ... ) Length: 1"---6". 3) Shank Diameter: M1.2-M6 umbrella roofing nail1) Product Specifications: 8G, 9G, 10G, 11G, 12G ... Surface treatment: Polished, electro galvanized, hot-dip galvanized7) Description: umbrella head, smooth body, twist body8) Package: Bulk packing; carton, bag, ... *1.7511BWG*212BWG*213BWG*211BWG*2.5 umbrella roofing nail