Thumb screw head caps for Cetus3D extruder. Just fit it over the screw head and press it down with a wrench or pliers.
Now you'll no longer need an allen key/wrench to remove or install the bearing plate that holds the filament against the extruder's feeding gear.
It's still being published as of right now, but here's the link:
https://www.thingiverse.com/thing:2513298
