Crown wheel pinion 1.metal gears:iron stainless steel 2.Size:1-90 mm 3.Small module,complexity 4.OEM,Non-standard Crown wheel pinion HENGKO LTD is specialized ... kinds of gears and gear box.HENGKO Powder Metallurgy gear includes: bevel gear, gear, gear box, planetary gear, gear sector, sun gear, straight helical gear, helical gear, multi-layer gears ...