Performance 15 mm front hub for use with Disc brake, using Centre-Lock mounting system Designed for 15 mm bolt thru axle forks with 110 mm O.L.D. Easy to use Centre-Lock Disc rotor mount for secure hassle free setup Double contact seals with internal grease sleeve to keep the elements out & the grease in, extending service life & maintain smooth operations even in the toughest terrain The hub uses angular contact bearings designed to cradle the balls giving both radial & lateral support for superior strength & durability in real world riding conditions; they also offer precision bearing adjustment & easy maintenance Lightweight & strong alloy axle housing for excellent rigidity when used with suspension forks & 15 mm thru-axles Ultra-smooth bearing races provide a long lasting low-friction rolling action Anodised forged aluminium hub shell