12 speed support, works for Shimano,Sram and flattop chain. Compatible to 8-12s system,Shimino 12s system.
Hybird ceramic bearings. Low friction and almost zero resistance. Make your riding easier. Offer smooth riding experience and low noisy.
Body aluminum and full CNC process, then anodized surface treatment. Lightweight 16g/17g/19g/21g from 11 to 14T.
Odd tooth like 11T and 13T are ordinary tooth, even tooth like 12T and 14T are narrow wide tooth. It is the optimum choice and design.
1 Year Warranty.
Model：11T，12T，13T，14T
Color：black side cover or red side cover
Package Content:
1* pulley wheels, 1* adapters for 4mm to 6mm, 1* adapters for 5mm to 6mm, 1* install bolts of 5mm(you have to use the adapter of 5mm to 6mm in 95% conditions).
