Designed for the wide front forks of the All terrain motorized bicycle. This hub comes with 20mm thru axle bearings, and adapters so it can be used on standard 3/8 ( 10mm ) axles. A 10mm axle and adapters come with the hardware setup, so it can be used directly out of the box. The hub is a Gemini dual disc mount capable, wide series hub. The rim is a black, double wall aluminum alloy, imported from Germany. 11g spokes are used to insure a great ride quality and longevity.