These Binding Discs are to convert the Burton Disc bindings from 2008-10 over for use on the 4x4 mounting on other brands or the M6 EST Channel boards from 2011 onwards. Make your old bindings work with the new system. (This will not fit the early M5 Channel boards you would need a different kit for that board)
Discs are 10cm diameter overall size. comes as just discs so you will need hardware to fix to the board.
Please note this will only fit Burton Disc bindings not Re:Flex and also not other brands bindings. Contact your binding manufacturer for discs to fit the channel board.