Come with self adhesive tape on the back. Easy installation, just simply peel and stick on. Surface must be clean and dry prior to adhering. It will give your car elegant and luxury look. No modification needed. Fitment: For F22 2 Series For F30 3 Series For F32 4 Series For F10 5 Series For F06 6 Series For F01 7 Series For F25 X3 For F26 X4 For F15 X5 For F16 X6 If your car multimedia controller use old model,you need to change the multi-media buttom first. Colour: red Material: aluminum Package Contents: 1 x Multimedia Knob Decorative Ring Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. 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.