Handle for 4mm small hex screwdriver bits

This is a handle for 4mm precision screwdriver bits. The bits go in about 13 mm, which is a good compromise between secure holding and ease of retrieval.

The handle can be printed from the handle part upwards without support.

This is a remix of oleeskildsen's screwdriver holder. I changed the bit size and flattened the end of the handle so that the model can be printed without support.