You can see a demo of this catenary here: (https://www.youtube.com/watch?v=igljl36MjXY) This is the 3-track variant of my futuristic catenary. This is an end piece for you to place at the end of the spline, so the wire isn't just floating. It'll add a bit of realism to the catenary. If you want to reskin or edit it, I've included the original .fbx files which can be opened with Blender 2.8