1、Fitment: Radio volume knob is replacement for A6 S6 C7 A7 RS6 RS7, perfect matching your car, the OE number is 4G0919070.2、Premium Material: Volume knob is made of ABS material, wear resistant, not easy to deform, anti aging, lightweight, sturdy and durable.3、Excellent Performance: Professional manufacturing, exquisite workmanship, comfortable hand feeling, stable performance and high reliability.4、Original Standard: According to original standard, you can directly replace the old or broken radio control knob, has a long service time.5、Simple Installation: The installation is simple, no modification and complicated operation is required, convenient for using. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store