4/5/6mm Ceramic Bearing Aluminum Alloy MTB Bicycle Rear Derailleur Wheel Bicycle Rear Derailleur Ceramic Bearing

Specification:
Product Name: Bicycle Rear Derailleur Ceramic Bearing; 
Material: Aluminum alloy 7075; 
Structure: Ceramic bearing; 
Size: 11T; 
Type: Fit for 4/5/6 MM roller screw axis; 
Weight: About 7.8g; 
Color: Black / Red / Blue / Silver / Gold; 
 
Features:
Made of aluminum alloy 7075, lightweight and durable. 
Adopts ceramic bearing, rotating without resistance, it greatly decreased frictional resistance,and increased cycling efficiency. 
The performance of ceramic ball bearings is very good, especially in low load and high speed environments. 
Setting for 4/5/6mm spindle shaft rollers. 
Apply for most of rear derailleur on the market. 
 
Package included:
1 x Bicycle Rear Derailleur Ceramic Bearing;