This PTO shaft end transmits torque from the tractor's power take-off to the driven implement. It is the output-side component that engages with the implement's input shaft, completing the driveline connection. The six splines on the shaft end mate with the corresponding internal splines on the implement's coupler, providing a positive, non-slip engagement. A worn or damaged shaft end causes driveline vibration and can lead to rapid wear of the implement's mating coupler. This original component is machined to the same spline profile and shaft diameter as the original assembly, ensuring the correct clearance for smooth engagement and disengagement without binding. On installation, verify that the locking mechanism on the implement side fully engages with the shaft end's retaining groove.