My new year’s resolution is to be a better-equipped urban commuter, so I’ve been assembling a compact, but thorough emergency/repair kit. Aside from safety lights, my Multi-19 tool is the most essential item I now carry with me at all times. It has the same chain tool as the previously-reviewed Multi-17. The two are nearly identical, except the Multi-19 has double the number of screwdrivers (two flat, two phiilips). Plus, in addition to the following hex keys (2, 2.5, 3, 5, 6 and 8), there’s also a 4m, which just so happens to be the size needed to adjust my rear derailer’s pulley bolts (can’t imagine I’ll ever need to do that — let alone on the road — but it’s comforting to know I’m carrying a hex that’s pretty much suited to every inch of my bike). The Multi-19 is slightly wider, 7g heavier (still only 175g), and the same length. It comes bundled with an ultra-light “flask” case so it doesn’t get snagged on anything in my bag.