1 Rear Derailleur Whee. Sealed steel bearing, waterproof and dustproof, super. Material: Aluminum alloy tooth/ceramic bearing. Color: black/red/blue. Weight: 10T-17T about 9.1-15.2g. Specification: 4mm/5mm.
Pair of 11t Derailleur Ceramic Bearing Jockey Wheels MTB Bicycle Road Bike
Pair of 13t Derailleur Ceramic Bearing Jockey Wheels MTB Bicycle Road Bike
2 x 13t Derailleur Ceramic Bearing Jockey Wheels MTB Bicycle Road Bike
11T 12T 13T 14T Derailleur Ceramic Bearing Jockey Wheels MTB Bicycle Road Bike
