Narrow Wide Single Chain, Durable Ergonomic Shape Aluminium Alloy Bike Repair Replacement Bike Narrow Wide Chainring for Bicycle for Bike(40T disc (104BCD)) - Product Features
- Ergonomic shape utilizes the stampede acting efficiently to create more stampede traction.
- Made of high quality aluminium alloy, which is lightweight and durable to use.
- The positive tooth corresponding chian tooth is wide, tooth corresponding negative chain is narrow.
- A perfect replacement for bike repair.
- Suitable for most crankset, fit for AM/XC bicycle.