Performance 15 mm front hub for use with disc brake using 6 bolt mounting systemdesigned for 15 mm bolt thru axle forks with 100 mm old6 bolt disc rotor mountdouble contact seals with internal grease sleeve to keep the elements out and the grease in extending service life and maintain smooth operations even in the toughest terrainthe hub uses angular contact bearings designed to cradle the balls giving both radial and lateral support for superior strength and durability in real world riding c