Material: This engine start/stop button is made of high quality zinc alloy which is scratch resistant and durable. This swivel start button cover is suitable for most single start button cars and to some motorcycles (buttons smaller than 1.18" can be installed). Please make sure the size of the start-stop button before placing your order. Inner ring: 3cm inner diameter 4cm outer diameter; outer ring 5cm 1.5cm thick. No modification no drilling required installation can be done by peeling and sticking the adhesive strip (included) to the back of the auto start button cover in a convenient and simple way that will not damage the original surface of the car engine start button. Prevents the starter button from being scratched and scratches protects car paint and protects children from accidental contact with the engine starter button. Great gift idea an ideal gift for boyfriend best friend or girlfriend. girlfriend of your life. A gift to help you show your love to the family you love. We only sell the starter button cover not other items in the picture. En Due to differences between monitors the picture may not reflect the actual color of the item. Please allow for small size errors due to manual measurement.