31N8-40053 31N8-40060 31N840053 31N840060 R305-7 Original new and rebuild could offer and With 6-12 months warranty，Any quality problem will send free parts to repair. And this model swing motor used for excavator JCB

OTTO 31N8-40052 31N8-40053 31N840052 31N840053 R290-7A Excavator Final Drive This Final Drive used for excavator Hyundai, Original new and rebuild could offer and With 6-12 months warranty

OTTO 31N8-40053 31N8-40061BG 31N840053 31N840061BG R300-7 Excavator Final Drive This Final Drive used for excavator Hyundai, Original new and rebuild could offer and With 6-12 months warranty