Deburring Tool And Bits Holder

This holder is for an aluminium bodied deburring tool and the different bits that come with it, there are 3 types of deburring bits that come with this tool, hence the markings on the holder:

HARD is for hard metals like stainless steel, tungsten etc.
SOFT is for soft metals like mild steel, aluminium, brass etc.
PLASTIC is for...erm... plastics, as well as the really soft metals like copper and so on.

This is the tool i bought and thus sized this holder to fit:
https://www.amazon.co.uk/AFA-Tooling-Deburring-High-Speed-Removal/dp/B07RHZ7T5C



The holders interlock with other ones i have made, and are based on these ER32 collet holders :
https://www.thingiverse.com/thing:3588076

The screws i use to mount these to the wall are called 'Flange Head Self Tapping Screws'