Review on 🔗 Black Chain Checker Plus II: Enhancing SEO by Pat Slater

Works perfectly. The hook sequence is a bit strange and not entirely intuitive. The instructions are printed right on the side of the tool, which is handy, but I'm wondering if they won't rub off over time. Of course, by then you'll be quite adept at handling this flimsy material anyway. Please note that on a good chain, the last hook/tongue should not be included in the chain at all. The tongue has two tiny extra notches to indicate if they fit the chain, 0.5% wear (change time) and 0.75% wear (probably damaged cogs) respectively.