BLUECHAIN Chain Wear Indicator

The user-friendly measuring tool lets you gauge the chain wear easily and quickly. Chains that are excessively ‘stretched’ cause faster and greater damage to cassettes and chain rings due to wear. As a result, you should check the chain regularly to replace it when required. You should replace the chain when the wear reaches 0-75% to 1%. Features of the BLUECHAIN Chain Wear Indicator Two measuring ranges: 0.75% and 1% lengthening Compatible with 5-to 12-speed chains