Easton M1-12 Front Axle A REPLACEMENT PARTIt's a sad fact of life, parts will wear out on your bike and will need to be replaced in order to keep your bike working properly. Some parts might be The Easton M1-12 Front Axle is a replacement part for Easton M1-12 front hubs. It is designed for 15x100mm thru-axles. Features Designed to fit 100 x 15mm thru-axles | Easton | M1-12 Front Axle Front, 15X100, M1-_12