Material:Q195,Q235 Specs Model: 14G,12G,11G,10G,9G,8G Technical Standards: Length: 1-3/4"--3"-2.5"-2" Shank Diameter: 2.10mm-4.19mm Finish: Zinc Clear, Zinc Yellow, Black, Nickel-plating, , Electro-galvanized, Chrome-plating, Dacromet,Mechanical Galvanizing, Hot-dip Galvanizing. color electro galvanized ,etc.