Dynamic Bike Care Double Checker

The Double Checker is a handy, laser-cut precision tool for accurate measurement of chain wear and rotor thickness. It features an integrated chain hook to keep the chain stable during installation, as well as a ruler for quick measurements. Riding with a worn chain and too-thin brake discs can lead to chain breakage and unreliable braking performance. Furthermore, a worn chain can drastically increase the wear on your other drivetrain components.
With the Double Checker, you know exactly when to replace your chain and brake discs to stay safe and fast while extending the lifespan of your components. The Double Checker works with all 7–13-speed chains, including SRAM Flattop, Shimano and Campagnolo.

Features:

• Suitable for all 7–13-speed chains, including SRAM Flattop, Shimano and Campagnolo.
• Accurate measurement of rotor thickness with brand-specific slots: SRAM, Shimano, Campagnolo, Magura and Hope.
• Anodised aluminium is lightweight, stable and Dynamic Purple.
• Guidelines directly on the tool, no manual required.
• Clever chain hook makes working on the chain quick, easy and safe.