I created these to keep my hex driver bits. There is a Metric version and Imperial version. Meant to be printed with TPU. Current STLs don't include loop for lanyard/keyring/carabiner (coming soon).
Metric is spaced out to hold 7 bits (5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm)
Imperial version is spaced out to hold 7 bits (3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8")
The author marked this model as their own original creation.