Shimano CUES RD-U3020 9-Speed SGS Cage Rear Derailleur Ball Training Aids Designed to be compatible with

Designed to be compatible with hooked and hookless rims

The fine thread

Features auto start/stop

it's a soft

Shimano CUES RD-U3020 9-Speed SGS Cage Rear Derailleur Ball Training Aids Designed to be compatible withShimano CUES RD U3020 9 Speed SGS Cage Rear Derailleur Make cycling an essential part of your fitness lifestyle with the Shimano CUES Shadow RD U3020 9 speed rear derailleur. Designed for daily riding dependability, its smooth and decisive rear shifting will keep you moving around town and into the countryside. CUES 9 speed Stable drivetrain performance on trails, gravel, and city streets Shadow low profile design protects rear derailleur from