This finger is the end component on the gathering-chain assembly of a grain-harvester header. It guides the crop material into the intake auger and prevents the chain from lifting off its track at the outer end of the header. A bent or worn finger causes the chain to derail or skip, leading to uneven crop feeding and potential damage to the chain and sprockets. The mounting hole is positioned to match the original chain-link geometry, so the finger maintains the correct chain tension and alignment without requiring shimming. When replacing, inspect the chain link and retaining hardware for wear; reuse the original fasteners only if they are in serviceable condition.