This is Hanger 49 from Wheels Manufacturing for compatible bike models see list below. Features: CNC machined 6061 aluminum Black anodized finish Includes (1) M8 Chainring Bolt Compatible Bike Models: Argon 18 Plutonium - 2005-2011 Avanti Aria 1, 2, 3 - 2011 Blade 1, 2, 3, 4 - 2011 Circa 1, 2 - 2011 Giro - 2010 Vivace - 2010 Azonic Avenger - 2011 AZ-7 - 2011 Propulsion - 2003 Saber - 2003 Barracuda Sharpfin - 2012 Bianchi 928 - 2006 All Road and Cross Except CX - 2008 EV2 - 2000 Luna - 2006 Short P - 2000 Some Years Of Giro - 2000 Super G - 2000 Xl Carbon - 2003-2004 Blue 2 Four - 2011 CXC - Prior - 2010 NX 7 - Prior - 2010 RC4 - Prior - 2010 RC4AL - Prior - 2010 RC6AL - Prior - 2010 RC7 - Prior - 2010 RC8 - Prior - 2010 RCSAL - Prior - 2010 T14 - Prior - 2010 T16 - Prior - 2010 BMC Fourstroke FS02 - 2012 SF01 - 2010-2011 SF03 - 2010-2011 SF29 - 2012 SH01 - 2010-2011 Shiver Series - 2008 Speedfox SF01 - 2012 Speedfox SF02 - 2012 Boardman Road Comp and Team Alloy - All Road Race and Team FX - 2011 Brodie - - -- Commencal All road bikes - Cube .-. - .-. Dawes Lightning Series (road) - 2012-2013 Diamondback Europe Road Bikes - 1996-1999 Podium 21 - 1996-1999 Electra Amsterdam Sport - 2007-2008 Amsterdam Sport Special - 2007-2008 Ticino 16D - 2009-2010 Ticino 18D - 2009-2010 Ticino 20D - 2009-2015 Ticino 7D - 2009-2015 Ticino 8D - 2009-2015 Falcon - *** Focus Cross Disc - 2008 Cross Pro - 2008 Culebro - 2008 Fire Edge - 2007 Mares Aluminum - All Model Years Mares AX 1.0, 2.0, 2.0 Disc, 3.0 - 2013 Super Bud - 2008 Fondriest JR9 - 2010 Fuji Absolute 2. Series - 2014-2015 Absolute 20 - 2014-2015 Absolute 24 - 2014 Absolute LE Perf - 2015 Absolute Series - 2003-2013 Ace Series (inc. 24, 650, Comp) - 2008-2015 Aloha Series - 2009 Bordeaux - 2004-2005 Boulevard - 2015 Cross LE Perf 3.0 - 2015 Cross Series - 2004-2012 Crosspro - 2007 Crosspro - 2009 Finest Series - 2004-2007, 2010-2012 League - 2005 Newest Series - 2004-2012, 2015 Palisade Series 1.0 & 2.0 - 2009 Provence - 2004-2005 Roubaix 1.0, 2.0 & 3.0 LE - 2...