With 23 tools and 30 total functions, packed into a custom protective case that mounts to any round tube or seatpost (25 mm – 33 mm) with a secure quick release strap. This unique multitool covers virtually every tool needed for on-the-go bike repairs. Whether you are a road warrior, or a trail fanatic you’ll forget you even have the Topeak Survival Gear Box Multi Tool until you need it most.