Shimano deore disc hub rear m525ashimano have been producing bike components since 1921 over the years they have designed and developed some of the best mtb hubs and spares ever seen featuresdouble contact sealingsuper polished bearing races for low friction rollinglight alloy qr lever and nuthubbrake compatibility6 bolt discrear axle type10x1colorblack and silvercassette body typeshimano 910sramrear hub spacing135mmintended usemountainrear wheel typemountainskewer includedy