This is Hanger 159 from Wheels Manufacturing, for compatible bike models see list below. Features: CNC machined 6061 aluminum Black anodized finish Includes (2) M3x10 Socket Head Screws Compatible Bike Models: Cannondale F-Si 29er Carbon / Alloy - 2016-2017 F-Si Aluminum - 2015-2018 F-Si Carbon - 2015-2018 F-Si HM - 2015-2018 F26 Carbon - 2013 F29 Alloy - 2013-2014 F29 Carbon - 2013-2014 F29 Carbon 1 & 2 & 3 and Ultimate - 2013-2015 Flash 29er Alloy - 2012 Flash 29er Carbon - 2011-2012 Flash Alloy - 2012 Flash Alloy 29er - 2012-2013 Flash Carbon - 2010-2012 Flash Carbon 29er - 2012-2013 Scalpel - 2011 Scalpel 26 Carbon Series - 2011-2013 Trigger 26 Carbon - 2013-2014