ZTTO New Bike Chain Tensioner MTB Bicycle Single Speed Chainring Jockey Wheel UK
ZTTO New Bike Chain Tensioner MTB Bicycle Single Speed Chainring Jockey Wheel Specifications: Converts any multi-speed bike to a single speed Spring loaded design accommodates a wide range of cog sizes Range: 13-23T extremely lightweight. Adjusts for perfect chain tension Adjustable chain line Weight:About 63g