Hope Pro 4 MTB Front Hub

15mm Axle. Hope hubs have proven their reputation for bulletproof quality time and time again, that's why Hope Pro 4 MTB Front Hubs are the benchmark for all other disc brake compatible front hubs Features 15mm axleSealed stainless steel cartridge bearingsHub shell machined from forged aluminium billetStandard 6 bolt disc fittingUnsurpassed reliabilityLarger diameter flanges, with no increase in weightBuy Hope Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.