9121916 9121933 EX300-2 Original new and rebuild could offer and With 6-12 months warranty，Any quality problem will send free parts to repair. And this model Final Drive used for excavator hitachi

9122946 9133168 9123357 9133210 EX100-3 Original new and rebuild could offer and With 6-12 months warranty，Any quality problem will send free parts to repair. And this model Final Drive used for excavator hitachi