Is your bike chain worn out?
Don’t guess—check it with this simple, precise tool!
Just insert the two pins into your chain links, press the gauge arm, and read the window to see if your chain is stretched beyond safe limits.
Made from durable aluminum alloy, it’s small, lightweight, and fits in your toolkit easily.
Works with almost all standard bike chains (5-12 speed, including MTB, road, and hybrid).
Regular checking helps prevent premature wear on your cassette and chainrings, saving you money in the long run.
Super easy to use, even if you’re not a mechanic.

A must-have for any cyclist who does their own maintenance.

Keep your rides smooth, quiet, and efficient.

No sharp edges, safe to handle.

Know when it’s time for a replacement before it causes bigger problems.
Simple, effective, and totally worth it!