The composite material is strong and durable and the special teeth pattern makes sure you can shift to a higher gear with the speed of light! High-quality pulley wheels are a must-have for every serious bike rider, with the RollerBoys you are good to go!
|Product Name:||BBB Cycling Rollerboys Derailleur Pulleys Shimano MTB 13T-13T BDP-09|
|rear derailleur accessories:||Jockey Wheels|
|manufacturer item code:||BDP-09|