Ever notice your bike's shifting isn't as smooth as it used to be? It could be due to a worn-out chain! But don't fret, we've got just the solution to keep your ride running smoothly and prevent costly damage down the road. Introducing the CC-2 Chain Checker – your handy tool for quickly and accurately measuring the wear, or "stretch," of nearly any bike chain. With this nifty gadget, you can stay on top of your chain's condition and know exactly when it's time for a replacement. Happy riding!