Tired of your chain dropping off, especially on rough trails or with a single-speed setup? This simple chain guide can help. It's a lightweight device made from a combination of T6 heat-treated aluminum alloy and tough nylon components. It mounts to your bike's frame near the front chainring and acts as a guard/guide, physically preventing the chain from falling off to the outside. It has multiple adjustable points so you can position it perfectly for your specific bike and chainring size. Weighing only about 45 grams, it adds hardly any weight. It's a straightforward, effective, and affordable piece of kit for mountain bikers, gravel riders, or anyone running a single-speed or 1x drivetrain who wants more peace of mind and fewer mid-ride interruptions to put the chain back on.