1.over 11 years OEM experience 2.strict quality control & best services 3 various materials and surface treatments Item Nostamping gears Materialsiron,aluminum,steel,copper,plastic,carbon steel,nylon,bronze,soldder alloy,HSS,tool steels or as per your requirementsDimensionsaccording to your requirementsSurface Treatmentheat treatment,polishing,PVD/CVD coating,galvanized,electroplating,spraying, ...