This is a Replacement Net Mesh (it’s made for the Double Fish 99-45G, however it works on almost all standard nets). This works with the standard professional net sets that use a string and beads (see the net type in Diagram 1).
It is only the mesh and string. To connect to a net set, you need your existing end bars. You can also attach a bead string at the end of this string by taking it off of your existing net and tying it to the string. Simply pop off the plastic end piece and swap out the mesh (see Diagram 2).
Please ask me if you have any questions and I’d be happy to help!