Hope Pro 4 MTB Front Hub Axle (20mm)Setting the standard for quality, this Pro 4 Mountain Bike (MTB) Front Hub Axle from Hope offers a high-quality stainless-steel construction and a reliable performance you can count on. Features: Use: Cyclocross, Road, Mountain Bike, Time Trial, Touring For use with a 20mm axle Sealed stainless steel cartridge bearings Hub shell machined from forged aluminium billet Standard 6 bolt disc fitting Unsurpassed reliability Larger diameter flanges, with no increase in weight Non-Boost 20 x 110mm versionBuy Hope Wheels & Tyres from Chain Reaction Cycles, the World’s Largest Online Bike Store.