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. swing reduction drive shaft. it is with 15 teeth on the big end and 30 splines on the small end, length 256.5 mm. the related parts for this swing device are also available. please refer to the dimension as well as the part number to check if it is the correct item you are looking for. the shipment can reach to most of the countries of the world, please contact us if there is no option for your destination..syi