Shimano Ultegra Hub Front 6800

. The Shimano Ultegra series is "pro proven" as it is a direct trickle down from their Dura Ace group Features Improved sealing performance through the use of low friction Labyrinth and contact seals, and an internal grease sleeve Special Boron Nitride machining process is applied to the cones for super smooth rotation Cold Forged aluminium hub shell with anodized finish Comes complete with Quick Release skewer SeriesUltegra Materials FinishAluminiumanodized Flange Diameter35 8mm Axle Length108mm Over Locknut100mmA 2 year warranty is offered with all Shimano products from Chain Reaction Cycles 3 years on Dura Ace and XTR products BuyShimano Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.