Genuine OEM Audi Menu Button Switch Knob, part number 4F0919069A. This rotary knob is an interior control component, primarily used for interacting with the vehicle's infotainment system. It provides tactile feedback and precise control for menu navigation and selections. The knob features a silver/chrome finish with a black center, and measures approximately 0.035 meters in diameter, weighing 0.008 kg. Using a genuine OEM knob ensures the correct fit, finish, and electronic compatibility, maintaining the aesthetic and functional integrity of the vehicle's interior controls.