Material Low carbon steel Q195, Q215, Q235. Length 1/2''-8'' Surface treatment Polished, galvanized Shank Diameter 0.8mm---6mm Packing : 1. 25kg/carton ( in bulk) 2. 20kg/carton ( in bulk) 3. Can packing as customers requirment Strength: about 500 ~ 1300 mpa The production process: With high quality wire rod wire drawing , the thickness of wire rod is 9.52mm 88.90mm