Pulley Jockey Wheel
All the results of the simulations and the experimentations indicated that the ceramic ball bearings' performances are very good, especially in the low load and high-speed environment.
Size:11T
Structure: Ceramic bearing
Material: aluminum alloy 7075
Color: Black/Red/Blue/Titanium/Gold
Weight: about 7.8g
Fit for 4/5/6 MM roller screw axis
Apply for most of rear derailleur on the market
