I am a plastic resin modeler. So you may wonder what am I building, motors? Why would a modeler need this? Well I can let you in on a secret I build my own cables and wires for my models. How? You need to start with very fine wire, the finest wire but sturdy. Pull off a long length. Match the wire from end to end twice (need picture) now you have four equal lengths in your hand. The long way is to start to twist these four strands by hand together until they make a thicker cable (4 strands think). The other way, You need a rotary tool, The fast way is to twist one end of your four strands together, untighten screw that holds the round sandpaper. slip the twisted end under the screw and tighten. Hold the four strands in one hand rotary tool in the other and turn on tool. This is going to happen fast so hold on. Now you have a wire or cable just the size you need. If it needs to be thicker move up to 6 strands and so on. Have fun building your own custom wire. I love it. And by the way this wire is perfect.