1.Please use alcohol or agent to clean the position of the installation (to make sure it without the grease.Wax or dust etc.) 2.please ensure the position of installation can be completely fit the case before install 3.Rive the strong double-sided adhesive of the back , if meet the case of a relatively low temperature, please heating it via the hair dryer or lighter . 4.According to the comparison stick up it and press about 1-2 minutes (Note:do not wash your car in 24hours , the adhesive should be fixed after 12 hours ) 5.The installation have been completed , DIY item --- Easy to install Compatible Vehicles: For Mercedes Benz ML-Class W166 2012 2013 2014 2015 2016 For Mercedes Benz GL-Class X166 2013 2014 2015 2016 For Mercedes Benz GLE-Class 2015 2016 2017 For Mercedes Benz GLS-Class 2015 2016 2017 2018 Item: Hood Engine Air Vent Outlet Cover Trim Car Accessories Car Styling Car Trim Car Parts Condition: 100% Brand new colour:Carbon pattern Material:ABS Package Contents: 2 x Hood Air Vent Cover Trim Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.