LifeLine Chain Wear Indicator

Chains wear over a period of use and can lead to poor quality of gear shifting and the potential for the chain to brake whilst in use. 

The industry standard for chain replacement is when the chain wear is between 0.75% and 1.0%. Simply place one end into a link on your chain and if the 0.75% side fits in your chain will soon need replacing, if the 1.0% side fits in replace your chain immediately.