Review on 🔧 Topeak Universal Chain Tool, Silver (3.3 x 1.7 x 0.6-Inch): Enhanced SEO-friendly Product Title by Andargie Marquez

This chain breaker is a good tool but does not work well with the narrow chains used in modern 12 speed mountain bike transmissions. You can see in the photos how those little grommets that hold the chain in place prevent it from being snug against the back plate of the tool. While it could still do its job, I didn't like my chain being pushed at an angle (Photo 1) and risking bending it, so I filed the teeth (Photo 2) until the chain was perfectly flat against the back plate (photo 1). 3). It's been working fine ever since, but the tool advertised for 12-speed chains doesn't need any modifications.