I really can't think of a situation where I'd (a) be traveling with carry-on only and (b) have anything that could be fixed by the tools on a Tread that couldn't more easily be handled by a small $30 tool kit. A small set of screwdrivers and needle nose pliers, under 7" in length, easily slips into a laptop bag and are permitted under TSA rules.

Quite frankly this strikes me as a Pandora bracelet for men. In that regards it is priced accordingly.