Ns bikes rotary front hubthis sturdy and reliable hub runs on smooth sealed bearings and can run on a 10mm female axle or 20mm axle this hub is not disc brake compatible but weighs less than 200g which is impressive for a tough freestyle hub features6061 alloy body 7075 hardware2x 6805 sealed bearingsdisc brake compatible noaxle options 10x100mm female axle or 20x110mm spokes 32 and 36hole optionsweight 155g 20mm and 190g 10mmbuy ns bikes wheels tyres from chain reaction cycles