Features: This complete set (3 knobs included) AC switch button control cover is made from the high quality ABS plastic and aluminum alloy outer-ring, wear-resistant, scratch resistant and dust-proof. No need for any other tools, just take out the original knob,then insert the new knob, without drilling or cutting, labor-saving and time-saving, you can install by yourself. The ac switch buttons control cover is equipped with decoration matching with your car to add some bright-colors to your car, so that your car is no longer monotonous. The thread design on the surface-adds knob texture, which is practical and beautiful. The control knob button can perfect fit-directly replaces your original, lost, worn or broken knobs, exact match, fits perfectly. Easy to install, just take out the original knob, then insert the new knob, then it will be-ok. Specifications: Material:Aluminium+Plastics Size:As Picture Shown Color:Black/Red/Blue For Package Includes: 3pcs Air Conditioning Knob AC Knob note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.