7/8/9/10/11/12 speed chain support, works for Shimano and for Sram. Compatible to 7-12s system.
Works to all brand of 12s chain, except the axs flattop 12s road bike chain.
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 9g to 13g from 11T to 16T.2 colors for choice, black and oilslick.
1 Year Quality Coverage. Package Content: 2* pulley wheels, 2* adapters for 4mm to 6mm, 2* adapters for 5mm to 6mm(you have to use the adapter of 5mm to 6mm in 95% conditions).
