This is a simple print that allow the construction of a wall mounted filament storage system. Using ½ inch PCV tubing that clips securely into the top to make a cheep and strong surface. I printed mine about 2 years ago in PLA and it is still holding strong, but I would recommend printing it in something stronger if you can. I spaced mine out to hit all the studs in my wall about 1.5 feet apart from each other