Umbrella head roofing nails,material is Q195 wire rod 1) Length: 3/4''-3'' 2) Diameter: 12BWG 3) ... Material: Iron Umbrella head roofing nails,material is Q195 wire rodDetailsPlace of Origin: Zhejiang China (Mainland) Type: Cap NailShank Diameter ... )Material:Iron shank with Plastic cap 6)Surface treatment:electro galvanized.7)Head colour:red,green,blue,white,yellow,purple,and ...