11T Bicycle Rear Derailleur Jockey Wheel Bearing Pulley Guide Roller Idler for Road Bike MTB
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Weight: About 7.8g
Material: Aluminum Alloy 7075, the material of inside bead is Ceramic.
Color: Silver, Gold, Red, Blue, Black
For 4, 5, 6 MM Roller Screw Axis and almost all mountain bike of 11T
Works perfectly in the low load and high-speed environment.