Please check the item description and photos, confirm it with your car. Make sure this item fit for your car before purchase. If the installation location has wax, you must clean it first before installation. Otherwise, can not install well. I recommend going to professional auto beauty shops. Adhesive is on the back. Please note that please use the thermal to warm up the adhesive during installation, to make the item stick firmly (No need to be too hot) Suit For G-Class W463 2004-2018 Color: Black Material: Alloy Package Contents: 1 Pair * Car Speaker Cover Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.