... 2) 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, ... , wooden box:9) Certification: ISO9001:200010) Min order: 5ton for trial order quantity11) Loading qty: 20-26 tons per 20 ...