This is a set of different length 12mm LED Strip mounts used to mount RGBW LED strips. These can be printed without supports with flat side down. The catch has the proper angle to allow printing without the supports.
I modeled this so that I could easily mount RGBW strips to the top of my PRUSA IKEA V2 enclosure( https://www.printables.com/model/3673-mmu2s-enclosure ). These are very simple and I have included several lengths hopefully to work for any need. Most of these are very easy to print and there should be no need for supports.
Pretty simple and straight forward and useful even in under cabinet mounting of LED RGBW strips.
The author hasn't provided the model origin yet.