Minimalistic Multiboard Pin for channels

I didn't find any meaningful pins for channels by Hands-on Katie (not sure if she's the original author), so I've created one that does the job and prints relatively fast (under 30 min). The pins in the repositories for the channels were broken in Cura and designed carelessly in regard of it's purpose and print speed, missinig locking pins, etc. Still, my pin could be further thinned (the inner ring) to boost printing speed even more. But it works well on the first take, so I keep it as is for the moment. Channel perfectly slides on (or push it from top) and the pin itself nicely locks into the multiboard and by turning 45 degrees.