This strip mounts on the header of a grain harvester, where it acts as a wear surface along the contour of the machine's auto-contour system. It provides a smooth, replaceable interface that contacts the crop or ground-engaging components, protecting the underlying structure from abrasion and impact. As the strip wears, the gap between it and the adjacent components increases, which can reduce the accuracy of the header's ground-following response. The manufacturer machines this strip to the same profile as the original assembly, so it seats correctly against the mounting points without requiring additional shimming. When replacing, clean the mounting surface and use new fasteners if the original holes are elongated.