This is a pair of track stops for a Myers brand hay trolley track.  Used in conjunction with a J-hook on the track, or fastened in position independently, these track stops will prevent the trolley from rolling off the end of the track.  To be used with standard Myers 2-1/2" track.  These track stops have never been used and still have quite a bit of original paint.  If you question if this is the correct track stop for your application, feel free to reach out to me with any questions, thanks!