Watch CC-4 Chain Checker Video Tutorial

More info: https://www.parktool.com/product/chain-checker-cc-4 The CC-4 is a drop-in style gauge that measures bicycle chain wear. The laser cut CC-4 accurately measures a long section of chain and strategically comes in contact with the chain in three places, quickly and easily taking the guesswork out of knowing when chain replacement is necessary. A worn chain will cause poor shifting as well as accelerate drivetrain wear.The tool works on any 5-12 speed derailleur chain (including SRAM® AXS) and is designed to accurately indicate when a chain reaches .5% and .75% wear, the points at which most chain manufacturers suggest replacement. Learn more about chains by watching our Chain Repair Help videos ▶︎ https://www.youtube.com/playlist?list=PLGCTGpvdT04RFvpef1qIJSQygRL8sv0eh ➤ Fix It: Did you know that Park Tool is the #1 resource for bicycle repair education? • Visit our YouTube Channel: https://www.youtube.com/parktool • Visit the Repair Help section of Parktool.com: https://www.parktool.com/repairhelp • Check out The Big Blue Book of Bicycle Repair: https://www.parktool.com/product/big-blue-book-of-bicycle-repair-4th-edition-bbb-4 ➤ About Park Tool: Park Tool has been manufacturing bicycle specific tools since 1963. Based out of St. Paul Minnesota, we are the world's largest bicycle tool manufacturer. A long-term dedication to quality, innovation, and customer service has made Park Tool the first choice of professional and home bicycle mechanics around the world. ➤ Subscribe: https://www.youtube.com/user/parktoolcompany?sub_confirmation=1 ➤ Like: https://www.facebook.com/parktool ➤ Follow: https://www.instagram.com/parktoolblue