21N-27-00130 705-21-26050 21N-27-00140 21N-60-34100 This used for EXCAVATOR,Original new and china could offer and With 3-12 months warranty

 21N-27-00130 705-21-26050 21N-27-00140 21N-60-34100 PC1250-7 PC1250-8  This used for Final Drive KOMATSU, Original new and rebuild could offer and With 6-12 months warranty

21N-27-00130 705-21-26050 21N-27-00140 21N-60-34100 PC1250-7 PC1250-8 and With 6-12 months warranty，Any quality problem will send free parts to repair. And this model Final Drive used for excavator hitachi