Bontrager BITS Integrated Multi Tool

Trek's newest Domane and Fuel EX carbon bikes feature an internal storage compartment in the downtube known as BITS which can hold several tools and spares so you don't need to strap them elsewhere on the bike, or in a riding pack or jersey pocket. This multi tool is designed specifically for that compartment and fits to the underside of the lid, keeping it from rattling around in your frame, but handy when you need it.

As any good multi tool does, it features the most common allen key sizes (or hex key if you prefer), a torx T25 and flat head screwdriver, all in a neat and light aluminium design. Simple, but the real simplicity is how it fits in your new Trek bike.