The Wolf Tooth Axle for RockShox and Fat Forks is perfect if you're looking for a front axle that is easy to use, lightweight and looks great. Easily installed with a 6mm hex key. Unlike other similar products, Wolf Tooth Axle for RockShox and Fat Forks uses a captive steel washer under the head to reduce friction on the fork leg. This protects your expensive fork, transfers more of the tightening torque to clamping load for a stiffer interface and prevents the axle from sticking or galling when you want to remove it. These are also a great replacement option for lost or damaged stock axles. Always apply a small amount of grease to the washer and threads when installing. Wolf Tooth Axle for RockShox and Fat Forks Compatibility RockShox 100 (standard) and 110 (Boost) suspension forks NOT compatible with RS-1 fork RockShox Bluto 150 mm hub Most rigid fat forks with 150 mm hub Wolf Tooth Axle for RockShox and Fat Forks Specifications Material: 7075 T6 aluminum with plated steel washer Thread spec: 15x1.5 Thread length: 12mm Weight: 100 mm / Standard - 45g, 110 mm / Boost - 47g, 150 mm / Fat - 58g Made in the USA