Burton Disc Channel Mounting Hardware is what you need to mount a Burton Re:Flex bindings or bindings that are disc mounted on a board featuring the M6 Channel.
How To Guide - Fitting Burton ReFlex Bindings to Burton Channel Boards - Blog
Burton Re:Flex ICS Channel Discs (Pair) –
Regular Disk Union Binding Company
Burton Scribe ReFlex – Splinters Boardshop
How to fit old burton bindings on a new channel board
Burton 4x4/Channel Disc
Burton / Men's Process Camber Snowboard
Burton new and old channel standard
Is this the right base plate replacement for the Burton Channel
Burton Spare Parts & Accessories