Park Tool CC-2 Chain Wear Indicator Water Bottles We moved the control panel

We moved the control panel from the left side of the box to front-and-center

5" / 62 cm

If it gets a little too warm outside or in the car

mildew-resistant

Super soft

Park Tool CC-2 Chain Wear Indicator Water Bottles We moved the control panelQuickly and accurately determine the wear and stretch of any chain. Compatible with all bicycle chains For modern 9 and 10 speed chains, replace chain at or just before the 0. 75% readings For 11 speed chains, replace at or just before the 0. 5% reading Insert the Chain Checker's pins into two links, press the swing arm gauge tight, and check the gauge window for an accurate reading