Avid/SRAM MatchMaker-X Integrated Shifter Mount.
Adapts 1-bolt/nut, band-clamp style Avid hydraulic brake levers to match with SRAM XX, X.0, 2007+ X.9, and 2010+ X.7 trigger shifters onto a single, hinged mounting perch
Also integrates with the XLoc remote control on XX-model forks and Reverb seatposts, providing three-way bar mount capability (shifter/brake/remote)
Compatibility (list may not be complete):
XX / X0 / X9 / X7 triggers as of 2010
Elixir CR Mag / XX / X0 and Xloc