Weight: 231g (inc skewer).- The Record hubs have been designed to exalt the qualities which made the previous ones famous & appreciated all over the world.- The oversize body design has been accentuated, some parts have been lightened & the freewheel body is made entirely of light alloy.- The highly appreciated adjustable 15-ball bearings have remained unchanged & the ceramic ball kit is available as an option.- The quick releases have been redesigned completely; they are now lighter & their operation is based on a symmetrical fulcrum lever. 9/10/11 speed compatible Please note this Rear Record hub is not supplied with cassette lockrings.