Bits fit very snugly, you need something to help you get them out, but that's what the hole in the backside is for, beside air. But the models with wings work much better.

it printed decently on my stock A1 Mini with 0.4 nozzle

They clip really nicely

It printed very nicely, with 0.2 layers

I would have used just a screw hole, but it works

Works really well, kinda loud when there's a bunch of poop rattling around in it lol

It has a weird fit, i don't know if it's ever gonna come out intact.

It printed really fast and really well, works flawlessly