Shimano saint hub front m810shimanos new front hub features a 20mm through axle for maximum control and minimum weight angular contact bearings ensure easy maintenance and total efficiency to keep you spinning freely and smoothly the new shape is visually lighter and incorporates the standard centre lock interface which allows easy interchangeability with other rotors or the use of a 6 bolt rotor adapter features20mm thru axle design improves steering and balances suspension response centr