The simplest chain wear indicator on the market. You can see at a glance if the chain is good to go or needs replacement. Very useful to avoid undue cog and chainring wear.
The indicator sits with a gap on a new chain.
The indicator lays flat on worn out chain.
Once your chain is so worn that the indicator lays flat, you need to replace your chain or you’re going to start to damage to the rest of your drive train.
