Enduro Wrench: A must tool for every fanny pak, this handy tool fits both your front and rear axle nuts, allowing the user to access wheels for flats or other problems and also includes a hex drive for removing your 7/8" drive spark plugs. Its flat profile makes it easy to carry or stash without the bulkiness of a large wrench. Made from steel and plated it's a tool you will have a long time.