These are stackable orbital sandpaper holders. They hold a large amount of pads as I have a lot. These are designed to be glued together 

I have includedblank versions without numbers if you want to just use stickers for them.

Supports are only needed fro the opening on the bottom of the containers the top technically needs supports but it prints fine without just a few loose strands that make no real difference to the models usability.

Colours can be used but they add 2 hours to the print so you can print in one colour and just paint in the numbers but the potion is there.

To change the colours just select the model in bambu studio and press “N” then use the bucket fill to flood fill the numbers I have them set to colour 1 and 2 on the AMS.