The one piece draglink is the newer type. Tapered stud fits tapered hole in arm, held in with castellated nut and cotter key.
The kind with springs, cups, and big slotted keeper screw and cotter key is usually older. The balls are often riveted into the arms, and the balls eventually wear too, making for more trouble to replace.
More modern trucks often have the newer kind of ends, but they are separate ends that each fit into threaded connecting sleeve, also allows adjustment of length.
Some chance you can piece together one like this with off the shelf parts.
