Multi Tools
The tool you carry is the one that gets used. A compact multi-tool covers almost everything that goes wrong away from the workshop — a dropped saddle, a rubbing mudguard, a loose cleat.
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Look for the sizes you will actually reach for: 4, 5 and 6mm hex keys, T25 Torx for disc rotors and most modern bolts, and a chain tool if you ride far from home.
A tool that is too big stays in a drawer. Weigh it against the pocket or bag it has to live in.
