1,Material: steel,stainless steel,aluminium, brass 2,customized sureface treatment 3,High QC standard 4, ... 0.1mm to 8mm or as requiredProducts Availablebolts, screws, nuts, rivets, stem nuts, shafts(axles, spline shafts, dart shafts),gears (pinions ... distance between Europe and China. steel stamping parts, stainless steel, aluminium, brass all can be stamped