I have the 17 version of that tool. It works fairly well, and even includes a set of spoke wrenches which work very well. That being said, the chain tool is a bit cumbersome, as you have to rotate the entire tool to operate it, and my pin snapped after a year (there is a reason most chain tool pins are replaceable, just not this one). Its ok for emergencies but I would get a standalone tool for home use too. Also, as far as multi-tools in general go, sometimes the Allen keys are not long enough or maneuverable enough to fit where you need them, so its good to have the 90-degree loose wrenches as backup, at least for the 4 5 6 sizes.Also,