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 in manufacturing all kinds of mechanical equipments and components,include various kinds of gears ... , straight helical gear, helical gear, multi-layer gears, miniature gears, small module gear reducer, all kinds of precision ...