75mm bushing & 12mm ball joint.  Fits all search results. If your model is listed below, will fit as specified:

09 A4/Q from build date 03.11.2008 to 02.11.2009
09 A5 from build date 03.11.2008 to 02.11.2009
10 A5 Cabrio to build date 02.11.2009
10 Q5 from build date 20.07.2009 to 02.11.2009
10 S4 to build date 02.11.2009
10 S5 to build date 20.07.2009 to 02.11.2009
10 S5 Cabrio to build date 02.11.2009

See Application Guide for full vehicle list.