Note : Updated 2002 The 15000 series has been updated and now uses heavy duty 8mm square hubs as standard. This impacts the reference numbers the third digit always defines the size of hub , a small number of old 9.5mm hubs are kept for replacement and maintaince .
Standard ref's now 150xx the 0 means 8mm square hubs as standard.
Old ref numbers were 151xx where the 3rd digit was a 1 = 9.5mm hubs. ( 0 = 8mm )
IF you have the old style 9.5mm hubs a special reducer spindle is used to interface with standard levers - part # 47469 , this reduces 9.5mm at the hub to 8mm square at the lever.