Portable allen wrench holder (1.5 - 6mm)

thingiverse

I'm on the hunt for a hex wrench holder that can accommodate all sizes from 1.5 to 6mm, with clear numbers printed directly onto its surface.\r\n\r\nHowever, printing tolerances are notoriously unpredictable, so if a hole turns out to be too tight, I might try holding the wrench in place with pliers, heating it up over a lighter flame, and then carefully inserting it into the hole - especially for those tiny sizes.