This is a small spotlight with an adjustable mount which utilizes 12mm bullet node pixels and is intended for outdoor holiday accent lighting. The pixels themselves are waterproof so it is a rather open design with a large hole in the rear suitable for 3 wire waterproof pigtails and a drain hole in the hood so that water doesn't pool up. The design is fully parametric and the Fusion 360 archive is included. You may need to adjust the case depth and pixel node diameter based upon your pixels as vendors vary a bit. I recommend printing the pixel ring first and testing with your pixels to determine if pixel fit and case depth will be adequate. If not, adjust the size in fusion through Modify->Change Parameters. Changing "pixel_diameter" and "case_depth" will scale the whole design. You can also change hood length and projection angle to adjust how tight you want it. The default design is pretty broad with a soft edge which works well for up close accent lighting. It's designed for 7 pixels, but you should be able to easily scale it if you want.

To make for cleaner printing, I removed the threads from the case and created snap-in nuts. Pay attention to the nubs on the nuts and how they are inserted into the case. Check the case model in your slicer or reference the include picture for orientation.