These four components clip together to make the spool holder for Brother Label printers.
DX series of labels.
The brothe unit is plasic welded and distroyed if taken apart to put 3rd party labels in it.
This spool is reusable.
The different main units fit various size label width.
Just put a sticker over the holes in the base and punch out the holes you want with a pen to designate the labels.
Here is the Fusion file - excuse the file, some of my earlier work https://a360.co/2yKc5kF