![Therefore, this chain detection device can be used conveniently when you need it.](https://images-na.ssl-images-amazon.com/images/G/01/x-locale/common/grey-pixel.gif)
Our chain gauge two precision indicators of 0.75 and 1.0, you only need to place the chain tester between the chains. If the wear reaches 0.75 = 75%, the chain must be replaced as soon as possible. If 1.0 = 100% wear is reached, the chain must be replaced immediately.