Park Tool CC-2 Chain Checker Tool, Blue

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

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

Works a treat, a bit pricey but hey its a Park tool...

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.

Great little tool. Easy to use.All of my own chains read as effectively 'brand new'.Customer chain I thought bad was off the scale.Good to confirm!

Much accurate than cheaper ruler type ones. This gives more accurate readings over the ruler type. Be aware of cheap non branded ones they give false reading! Buying Park Tool you know you are buying quality stuff. It is made from alumium so be careful do not drop it on hard surfaces.

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.

Easy to use and accurate