As others have said, this tool is beautifully crafted. However, the description misses one important detail: the chain breaker tool brakes chains and connects chains, but it does not do the fine-tuned loosening that a full chain breaker does. I bought this tool because I thought I could get a good two-for-one; now I'll probably need to get a regular chain breaker. I also contacted Lezyne's customer service, and they responded flatly that this is not a full chain breaker tool.
Great lightweight tool for emtbs that like to break chains. The tight machining, quick-link holder and magnetic functionality make this a great tool for your riding kit.