332-7500 277-6697 3327500 2776697 312D and With 6-12 months warranty，Any quality problem will send free parts to repair. And this model Final Drive used for excavator hitachi

277-6697 278-6920 332-7499 2776697 2786920 3327499 312C and With 6-12 months warranty，Any quality problem will send free parts to repair. And this model Final Drive used for excavator hitachi