Stone Narrow Wide 12s Pulley Wheel Gear Guide Roller Jockey 10t 12t 14t 16t High Strength Resin Smooth Bearing Solid Aero DJC

High-concerned chemical：None Model Number：stone solid aero Total Capacity：10/11/13/15t/17t Gears：27 Speed Material：POM high strength resin Type：Rear Derailleur Brand Name：stonedw Origin：Mainland China Components：Derailleurs

High-concerned chemical: None Model Number: stone solid aero Total Capacity: 10/11/13/15t/17t Gears: 27 Speed Material: POM high strength resin Type: Rear Derailleur Brand Name: stonedw Origin: Mainland China Components: Derailleurs