This is our trailer attachment. It is not for storing your corral or to put them on the side of your trailer while traveling. This attachment is to secure your corral to the side of your trailer while it is set up and in use. Comes with self-tapping screws. We recommend 2 loops per location where you want to attach your panel to. See our the picture above where it shows the 2 loops. So typically with one corral you would need 2 locations which would be a total of 4 loops.