This is a clip for the HEX Ring Fan Duct created by takman29 and remixed by kroffty. The original clip is much simpler and does the job, but it's not the most aesthetically pleasing thing to look at. I need it to look like it fits properly (I'm kind of picky that way).
I lengthened and widened the clip to get a better grip on the duct (without blocking the fan vent) and removed the gap between the duct and the hotend cover.
You'll probably need to remove the stock blue LED to make room for this clip. It was already pretty useless, so that's no big loss (mine had long ago broken free from its housing).
The author remixed this model. Imported from Thingiverse.