The Park Tool MTC-40 is a high quality folding take-along bike tool that features all the essential tools needed for an on-the-ride adjustment or emergency repair. The MTC-40 features a selection of hex and star driver wrenches for most bolts and fittings found on a bicycle, as well as a universal screwdriver for derailleur adjustment. Also features a chain breaker tool for emergency chain repair and replacement, with an integrated disc brake rotor straightener and bottle opener. The detachable CO₂ cartridge inflator adaptor is used in conjunction with disposable CO₂ cartridges to assist in reinflating flat tires — compatible with most bicycle tubes with a Presta valve.

Built with a super strong composite multi-position handle and hardened and plated tools to withstand years of use. With its compact size, the MTC-40 is the perfect size for a saddle bag or backpack.