Unior Professional chain wear checker tool 1643/4 0-1.3

The Unior Pro 1643/4 chain wear indicator is a gauge for determining when your bike chain needs replacing. It is ideal for anyone who wants to check their drivetrain themselves in the workshop or garage.

• Measures chain wear over 10 links, with a measuring range from 0 to 1.2%
• Tells you when to replace the chain: below 0.6% for up to 10-speed chains, below 0.5% for 11- and 12-speed chains
• Made of steel, it remains accurate and withstands frequent workshop use
• 137 mm long, easy to handle and store in your toolbox
• Suitable for 1/2" chains, the most common type on road, gravel and MTB bikes

Technical specifications

• Type: Gauge for measuring chain wear
• Material: Steel
• Measuring range: from 0 to 1.2%
• Total length: 137 mm
• Chain compatibility: 1/2"
• Intended use: Checking chain wear, measuring over 10 links
• Replacement threshold: Below 0.6% for chains up to 10-speed; below 0.5% for 11- and 12-speed chains
• Package contents: One chain wear indicator
• Manufacturer code: 617170