Reach for the Crankbrothers Multi-19 when you want one tool that handles the full range of trailside and roadside repairs without leaving you hunting for the right bit. This is the top of the M-Series lineup, packing 19 functions into a folding body that still drops into a jersey pocket or saddlebag. The headline piece is the chain tool, which drives out pins on 8, 9, and 10-speed chains, so a snapped chain in the middle of a ride becomes a fixable problem instead of a long walk home.

The build is what separates this from the gas-station multi-tool.

The tools themselves are stamped from high tensile steel, and they're sandwiched inside a 6061-T6 aluminum frame with textured side grips that give you a secure hold even with gloves on or hands slick with sweat and trail grime. At 89mm long, the leverage arm is short enough to stay compact but long enough to actually break loose a stubborn stem bolt without rounding it off. If you've ever fought a cheap folding tool that flexes before the bolt moves, you'll notice the difference the first time you lean on this one.

The hex coverage runs 2, 2.5, 3, 4, 5, 6, and 8mm, which spans everything from cleat bolts and accessory mounts up through crank and stem hardware. A T25 Torx driver handles disc brake rotor bolts and a lot of modern component hardware, and the screwdriver set covers Phillips and flat-head duties for derailleur limit screws and accessory brackets. Four spoke wrench sizes let you true a wheel enough to limp home after a hard hit, and the 8mm and 10mm open wrenches cover older axle nuts and accessory hardware that hex keys can't reach.... Read More