2 fender expansions made of elastic ABS material for 2 car tires sufficient (either at the back or front). The wheel run length is 74 cm (see the image for the geometric data). The screws are not in shipping (because of course everyone has a different screw request for their car, i.e. color, size, type… .etc.) Before you attach the FENDER firmly, you should set them in the most optimal position so that the FENDER fit on the contour of the wheel run, then they should be without much worriesFENDER Bend and screw. With 2 people, the extension is easier. It is even better if a specialist or a workshop takes over the installation. Our ABS spoilers were made from a very stable and solid material. The advantage of the spoiler is clearly due to the accuracy and quality. No further adjustment wor.