Your bike is your freedom. Protect it with accuracy.
Threo Bicycle Wear Indicator accurately measures bicycle chain stretches and features a wear indicator that quickly identifies when it needs replacing. Made from durable materials to suit road and mountain bikes, our compact tool is a must-have for cycling enthusiasts of all levels.
Accurate measurement
Threo indicator accurately measures the stretch of your chain, allowing you to determine when it needs replacing.
Durability
Made from high-quality and durable materials, our compact tool is built to last for road and mountain bikes.
Optimum performance
Maintain your bike in its best condition, preventing the need for expensive repairs. Achieve the best ride performance effortlessly.
More reasons to love our Threo chain indicator
Color Palette 
Active Lifestyle
Compact
Ergonomic Design
Sarah
This bike chain ruler is incredibly useful! It helps me ensure that my bike chain is always in top shape. A must-have for every cyclist.
Mike
Highly recommend!
Eve
Durable and reliable. Perfect for checking chain wear regularly. Has become a part of my toolkit.
Tom
Accurate wear indicator, easy to use.
Alice
Essential tool for bike maintenance!
Alice
Highly accurate and easy to use. Improved my bike maintenance!
Tom
Great tool, but slightly expensive.
Dinny
This tool works easily with little effort and no guessing!! I like this style as it is very simple to use and easy to read!!👍🏻👍🏻
Fintan
This is the best chain wear gauge I have seen. The measuring pins are placed between two chain links and as you move the gauge the pins spread out indicating chain wear from 0 to 1.
Aengus
I really like this tool. It is super easy to use and it provides the best accuracy. Recommended!