This finger is the active tine on the straw-walker assembly. It agitates the crop mat as it moves across the walker, separating the remaining grain from the straw. The finger interacts with the walker frame and the adjacent tines to maintain consistent agitation across the full width of the walker. A worn or broken finger reduces separation efficiency, allowing grain to be carried out with the straw. The mounting hole is sized to match the original pivot pin, and the finger profile matches the original to preserve the walker's stroke pattern. On replacement, ensure the retaining pin is fully seated and the finger pivots freely without binding.