This is a socket for SK6812 Mini-E RGB LEDs which come in a tiny SMD package. In contrast to the SK6812 (socket can also be found on printables) it is much easier to solder. This socket helps soldering wires to it, provides strain relief and provides a larger surface for mounting the LED (e.g. with glue or tape).
Assembly
Print settings (0.4mm Nozzle):
I used active cooling with min speed of 5mm/s, so movements were at normal speeds. Total print duration is 3 minutes on my Ender 3.
The author marked this model as their own original creation.