It may be the slimmest tool on test, but the devil’s in the detail of the Sixteen. The chain tool has five spoke keys and a bottle opener built into it, and a tiny clip-on head expands the 5mm Allen key to an 8mm. Each of the tools is stamped with its size, so you’ll never struggle to pick the right one. The smaller tools are long enough to access awkward derailleur bolts. Because the larger-diameter tools are quite short, it can be tricky to access hard-to-reach bolts. The chain tool isn’t as robust as others on test and rattles around on its thread, which can be obstructive while using other tools. Price $37