I didn't like any of the edge spacers that I found for installing my new Luxury Vinyl Plank flooring, so I designed my own. I included a large flat edge for the wall side to help be stable against old imperfect drywall, and a tail at the end to help easily pull them up when you're done. The spacer nub is 6.5mm, or just a little over ¼ inch (~0.256 inch). The included .3mf has them printed on their side with 8-wall thickness so that they're plenty strong.