The old reliable Crankbrothers M17 is one of the most iconic tools in mountain biking’s recent history. When it emerged along with the rest of the M series well over a decade ago, many of us were still focused on tools on the far ends of the function-spectrum. On one end, there was the Topeak Alien series, which were the clown cars of multi tools. The bits just kept coming, one after the other, out of an impossibly compact device. Then, on the other end was the Park AWS-9. It’s got a bunch of allen wrenches. And they fold up. That’s it.