Thank you for viewing! "Bundle purchases" are supported. You can select multiple items and negotiate a discount. ◎ Product Size Inner diameter: Approximately 2.9cm Outer diameter: Approximately 3.8cm 1: Installation method: Adhesive tape 2: This type is for sticking on the start button. 3: The double-sided tape may be large or the adhesive may be weak. 4: The size may not fit depending on the vehicle model and year. Please refrain from purchasing if you are concerned about defects in the double-sided tape, imperfections in the manufacturing, or minor scratches.