Crankbrothers M20 Multi-Tool

Yes, the integrated chain tool is compatible with 8-speed through 12-speed chains, covering the vast majority of modern mountain and road bike drivetrains.

The external case acts as a protective shell for the tool itself, but its primary utility is the dedicated storage space for a master link and the five included tire plugs, keeping these small, easy-to-lose essentials organized and accessible.

Absolutely. The M20 features a dedicated tire plug tool and comes with five tire plugs, allowing you to quickly seal punctures in tubeless tires while out on the trail.

It is designed for minor adjustments to slightly bent rotors. While it won't replace a professional truing stand, it provides enough leverage to straighten a rotor enough to stop brake rub and get you home safely.

The M20 weighs 205 grams. While it is robust and comprehensive, it is on the heavier side for a jersey pocket, so many riders prefer carrying it in a saddlebag or hydration pack.

It covers almost every common adjustment, including hex wrenches from 2mm to 8mm, Torx T-10 and T-25 bits, screwdrivers, and spoke wrenches. It is a very complete kit, though you should verify your bike's specific bolt sizes to ensure full compatibility.