For those of you who don't want or need to tote enough tools to fill every available pocket in your hydration pack, Pedros created the Critical Mass Multi Tool, an sleek tool constructed with hollowed-out carbon fiber.
Slip it into your jersey pocket for just-in-case situations; it has 2, 2.5, 3, 4, 5, 6, and 8 mm hexes, a flathead screwdriver, a Torx T25, and a Mavic M7 spoke wrench.