2006 Audi A6 Radio Stereo Control Knob Set. This is a genuine Audi OEM part, not the cheap aftermarket stuff. The knob set has been thoroughly inspected and is in great shape. ***This knob set came standard on many A6 models but please make sure your current knobs match our pictures as Audi used different style knobs on the same year in the A6 line, thank you. We offer free shipping on this item as well as a money back guarantee. Please contact us with any questions that you may have.