We specialized in roofing nails: Size:BWG5-13,1-1/2" -3", Head(mm):14mm/18mm/20mm/24mm, Smooth shank, twisted shank; galvanized and hot-dipped, Umbrella head, flat head, PACKING: 25KGS/CTN,7LBS X 16BOX/CASE,ETC. We will offer you products with top quality and competitive prices, welcome your specific inquiry.