Stands for Echo 4 and Echo dot 4. They should work with Echo 5th gen as I think they're the same size.
Included are two models; one for Echo dot 4 (smaller one) and one for Echo 4 (big one)
To get different color within the legs of Echo dot 4 cut a piece of filament and insert it in the leg.
For echo 4 (big one) I'm adding inserts you can print to put inside the legs.