The interior surface of the rear fender is accessible from the inside of the trunk by removing the trim; in certain cases (vans, sport utility), it is easier to remove the rear lights in order to access the zones requiring treatment. In certain vehicles, isolating materials blocks access to the contour of the wheel. If possible, it is strongly advised to remove a small section in such a manner that the product may infiltrate and protect adequately. Use the 48" jet, 360° flexible hose or the 45° hose.