If you’ve ever had a stripped bolt ruin your day on the bike (or prevent you from even having a day on the bike), then the new Clever Standard Extractor Tool is worth a look. Using a twisted hex head, the wrenches are designed to bite harder inside rounded hex bolt heads, helping you get them loose without resorting to drilling them out or notching them into a flat-head with a Dremel tool.
The tools are made to remove bolts that are partially stripped but are beyond hope for standard hex wrenches. They admit that it won’t work on bolts that have completely rounded off, but for most applications, they could save a lot of time and frustration compared to using power tools (and potentially damaging your component or frame). Here it is in action:
The wrenches have a T-handle designs with a standard hex head on the opposite side, and twisted heads on the other and at the end of the long base. The twisted sides are only for rescue operations and shouldn’t be used to tighten a bolt, so the dual ends turn this into the only hex wrench set you’ll need. They’re available in 2/2.5/3/4/5/6/8/10mm sizes and will retail for $12-$18 each depending on size, but will start out selling as complete sets for $99.99.