Sliding Gear High-low usd for the gearbox of light three wheel vehicles, the material is 20CrMnTiH3/8620H. Process: precision forging, isothermal normalizing, carburizing and quenching. Gear accuracy level 8-9. Transmission noise is less than 80dB,high strength , transmission is stable, Packaging and transportation: suitable for sea transportation, can be customized according to customers