Lightweight: bicycle chain tensioner made of high quality aluminium alloy material, light weight and small, easy to install and use, will not burden the bike.
Function: It can effectively prevent the chain from falling off, and reduce the gear feeling. This chain adjuster can transform multi-speed bicycles into a single speed bike.
ENERGY SAVING This bike chain tensioner can ensure that the chain reaches the ideal tension state, making your pedal operation labor saving.
Exquisite Workmanship: full CNC precision machining, anode color treatment, exquisite workmanship, beautiful and fashionable. Thanks to the floating pulley and spring adjustment, a perfect chain tension can be achieved.
Bearing shaft: a bearing shaft is used, which can be combined with different guide wheels. This single speed bike adjuster is suitable for folding bike with 11T or 13T rear derailleur, great accessory for cycling lovers.