6 IN 1 BIKE CHAIN CHECKER MTB ROAD BIKE GAUGE TOOL
Material: Stainless Steel
Features: Chain Wear Indicator, Widely Compatible, Measurement Ruler
With precision laser cut design, it can accurately measures chain whose wear extent reaches to 0.5 percent to 1 percent.
The product has mini size design, which is easy to use and carry.
This chain wear indicator is convenient for you to determine whether the chain needs to be replaced.