Lose your nuts!
The Mary-Kate hub features a bolt on axle design. What does that mean? It means instead of having a very small threaded area (axle nut) holding your hub in place, you have a much larger ( 3 to 4 X) threaded area (axle bolt) holding your hub onto your bike.This larger threaded area reduces stress on the axle and increases strength of the hub as a unit.Another plus is that you don't get protruding axle ends. What's not to like about those advantages?
The Mary-Kate has a CNC'd 6061 AL shell, AL inner axle, 4140 Heat-treated CR-MO axle bolts and thread on hub guard crafted from 7075 AL. It all rolls on Two sealed bearings for silky smooth action.


Colors: High Polish Silver, Black, Purple, White and Green
Weight: Complete Hub (guard and bolts)......9.6 OZ