Specifications 1.competitive price 2.delivery fast 3.excellent quality 4. produce according to drawings 5.strict quality control 1. produce according to drawings 2.strict quality control 3. OEM is acceptable 4. ISO:2000/TS16949 certification 5.Heat treament:carburizing and quenching 6.. Surface disposal:forced shot-peening 7. Advantage:introduced the high technology from American and produce the first rank-highest quality truck gear in China. 8. Size:Dia10-800mm,Module 0.5-8 9. Material :8620H HRC:58-64 10. each processing, strictly quality control BUY PWELL PART, GOOD CHOICE !!!