Park Tool CC-2 Chain Checker Tool, Blue

This is much more useful than the simple chain wear indicators if you’re faced with a variety of multi-gear chains. It is quite expensive but generally you get what you pay for particularly with tools. It’s built to last.

Excellent tool nice & easy to use a must for all push bikes at least e-bike owners should have one to keep an eye on their chain. Replacing a chain cheaper than the cassette & cog at the front

Easy way of monitoring bicycle chain wear

This is a nice tool. There is a knack to using it correctly so a degree of mechanical sympathy is required but most careful people should have no problem getting an acceptable indication of chain wear.The cam design of measuring minute distances is clever and the materials are all good quality.It comes in a flimsy plastic tray which I think is a shame. The pins are a bit too fragile to keep this loose in a toolbox so it would have been nice to get a decent cardboard or plastic box to store it in.

Love it, simple tool that tells you if your chain has worn. Not cheap but feels quality and that it will last.

Very accurate and so easy to use.

So simple but tells you what you need to know. Excellent quality

As you would expect from Park Tool an excellent well made tool works well. The only down side its not good to store I a tool box with other tools as the measurement arms may bend.