(1)Steel grade: 95CrMo equivalent to SANDBAR 20 or C253, 55SiMnMo (2)Shank size: hex19mm hex.22mm, including Plug Hole Rod (3)Head Diameter: 24mm-44mm (4)Length: 0.4m-10m (5)Package: in wooden case or in bundles. (6)Productivity: 20000pcs / month