Roofing nail with umbrella head 1) Dia: BWG8~BWG13 2) Size: Wire diameter: BWG8 ~ BWG13 Length: 1.5'' ~ 4'' 9Gx2.5'', 10Gx2.5/3'', 12GX2'' are very popular 3) Material: Q195, Q215, Q235 4) Description: Umbrella head, smooth body, twist body 5) Surface treatment: Electro galvanized or hot dipped galvanized 6) Packing: 25kgs/carton box in bulk 7lbs/box, 8 boxes/carton 50kgs/gunny bag We are   China nail manufacturer   offer best nail OEM, ODM,service.