we supply spare parts for heavy equipment, which are mainly used on engine, hydraulic & electronic systerm, and undercarriage, covering almost the whole machine. excavator spare parts including bearings, gears, seal kits, engine parts, motors, pumps, solenoids, valves, etc. the dimension of this gear ring is 53/54 teeth, height 134mm (±1-2mm). it is kind of double stage gear ring, using for the swing device of excavators. please refer to the given dimension and the part number to check more compatiable models. the shipment can reach to most of the countries of the world, please contact us if there is no option for your destination..syi