Those fences are low poly and they also kinda look like fence poses of a minecraft fence (If you use a debug stick you can see the models of the mc fence) Also those models were made on a phone with an app called "Prisma 3D" You can still Use it and show it to public (Like on Youtube) it as long as you give me the credit.
Also if you use this model in a program where you CANT separate the models, its still good because im working on making a collection of those fences separated