When weight and space are at a premium, the best option and really the only option for riders who want true utility, is the M19. Simply put, the M19 is durable, tough and built to withstand every trail and every mile. The foundation of the M19 is the materials that comprise the frame and tools themselves. The frame is lightweight and durable 6061-t6 precipitation hardened aluminium alloy, with side grips on the either side for a secure handhold even with gloves on. The tools themselves are high tensile steel, hardened for extreme durability and made to withstand even the most drastic climates. Top it all off with three different finish options and you have the pinnacle of multi-tools. Crank Brothers not only wants to provide a durable and effective multi tool, they also want it to be convenient. Thats why the M-19 comes with a stylish tool flask, keeping water and moisture out so rust doesnt damage the beautifully minimalistic appearance. The tool flask also helps eliminate rattling and damage to the other items in your saddle bag, rucksack, or whatever your preferred riding luggage is. On a bike tour or bikepacking trip, youre going to need a chain splitter, and that immediate rush of relief when you pull out your M19 and realise that Crank Brothers didnt just throw this together is going to come over you like a cool breeze. The 17-4 ph stainless steel chain tool with 8/9/10/11/12 speed capabilities is always handy and works like a charm, whether youre in your workshop or on the side of gloomy road. Tested and proven by world-class athletes, Crankbrothers engineers mountain bike components that deliver superior function through disruptive design.