The cover for the start button is crafted from premium metal, which helps to avoid scratches, keeps children and pets from unintentionally pressing the start button, and enhances driving safety. It has an outer diameter of 1.57 inches and an inner diameter of 1.18 inches, making it compatible with about 98% of vehicle models. It is also appropriate for motorcycle keyholes, door mirrors, computer power buttons, socket holes, DIY decorations, and more. This makes for a great gift option.