Size:11T 13T. 7075 High strength aluminum，ceramic pulley. Type：pulley. Fit for 4/5/6 MM roller screw axis.
11T 13T Bike Ceramic Pulley Aluminum Alloy Rear Derailleur Bearing Jockey Wheel}
11T 13T Bike Ceramic Pulley Aluminum Alloy Rear Derailleur Bearing Jockey Wh,yo
11T 13T Bike Ceramic Pulley Aluminum Alloy Rear Derailleur Bearing Jockey WhW ZF
11T 13T Bike Ceramic Pulley Aluminum Alloy Rear Derailleur Bearing Jockey Whe ZT
11T 13T Bike Ceramic Pulley Aluminum Alloy Rear Derailleur Bearing Jockey Wh'xe
2pcs Ceramic Pulley Aluminium Alloy Rear Derailleur Guide,Bicycle Jockey Wheel Roller Part Accessory For MTB Bike,Support 7/8/9/10 speed,Apply for Most of Rear Derailleur on the Market(red 11T)
