This a simple spool holder for the boxes of silicon wire you can get on Amazon. The boxes have holes in them to pull the wire through, but the spools would constantly get tangled with each other and jam up. I made these to keep the wire from coming off the spool, so no more tangles. The files are on Onshape, so you can copy and adjust the size for different spools if needed. https://cad.onshape.com/documents/87203f0a9b7356f1c7bb92a1/w/f2a8c95797017c85394d922c/e/1f2975caa7a8f23863d3fdde