A trusty friend for simple fixes.
The Park Tool Multi-Tool keeps your bikes rolling smoothly on the road and trail with its compact, easy-traveling design and variety of versatile tools. All of the multi-tools include a variety of hex wrenches, Torx-compatible drivers, and combo/straight tip screwdrivers for tightening loose components. The M-20 and M-40 tools feature a CO2 cartridge adapter for re-inflating flats and low-pressure tires. Packing even more repair functionality, the M-30 features 8 and 15-millimeter box wrenches and the M-40 has a ten-speed compatible chain tool.