This is a simple hex bit(1/4 inch, 6.35mm) holder made of TPU filament. I felt that the bit holder I purchased was hard to insert and remove, so I decided to design it myself.
Unfortunately it doesn't work with PLA as it was designed and tested with TPU.

I designed 6 types of holders from 5 bits to 10 bits.

Prusa

I3 MK3S

No

No

0.2mm

15%