Has a gauge and fits Schrader and presta valves.
Use it: When you're not inflating on the go; it's faster and more accurate than a minipump. (See how to use these tools and learn the 25 Easy Bike Fixes Anyone Can Do.)
Has a pin extractor controlled by a threaded handle.Use it: To drive a pin in or push one out when repairing or removing a chain.
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Fits in your hand for no-fuss leverage; some have one groove to fit one spoke size, others, more than one.
Use it: Turn loose spoke nipples clockwise to true a wheel and adjust tension.
Unlike a six-sided hex wrench, the ends of these are star-shaped.
Use it: To tighten Torx bolts on chainrings and disc-brake rotors. (Learn the 3 Ways to Keep Your Bike Riding Great.)
A small nylon or metal pry bar.
Use it: Slip the flat end between tire and rim, then hook the other end onto a spoke. Put the flat end of a second lever under the tire bead and slide it to remove the tire.