4、This was the beginning of the Japanese derailleur and multi-sprocket freewheel industry.
3、The reverse recovery properties of the freewheel diode are also distinctly improved.
5、The process of cold rolling forming for outer ring of single freewheel of bicycle and the structure of roller and jig, and the parameters for rolling machine have been introduced.
2、Level3: Tolerance matching of freewheel bushings. Factory only.
1、coast in a vehicle using the freewheel.
