This hitch pin connects the implement drawbar to the tractor's three-point hitch lower links. It passes through the clevis or ball-joint end of the link and the implement's hitch eye, securing the coupling with a retaining clip or linchpin. The pin carries the full draft load from the implement to the tractor chassis. Wear on the pin body or the retaining grooves causes slop in the connection, leading to accelerated wear of the link eye and implement hitch. As an original-manufacturer component, the pin is machined to the same diameter and groove geometry as the assembly it replaces, so the retaining mechanism seats correctly without modification.