- Minimalist, lightweight multi-tool option stored at the end of an axle during rides for easy access during quick adjustments and trailside repairs. - On one side of the handle is a 5mm hex end stepped to 6mm - Compatible with Wolf Tooth rear axles that have threaded axle bolt (091000). - Four double sided bits: 2, 2.5, 3, and 4mm hex; flat head #3.5 and Phillips #2 screwdrivers; and T10 and T25 Torx-compatible - Two double-sided hex bits can nest on the inside of the handle via magnet