compact TPU bit holder with cap

A compact 12 bit holder with cap, so that I can transport the bits in a bag as emergency tools without damaging other parts.The design is only usable when printed with TPU 95A or softer. Use the printing properties coming with the print profile. With the Bambu TPU print properties the print will fail.I designed the bit holder to be compact and lightweight and did not consider optical aspects. I believe the thickness used is the minimum that is possible. Every other material than TPU will fail, so that you cannot insert standard 6mm bits. The holder (bottom part) is designed so narrow, that the bits hold quite well. The cap is some 0.3 mm wider in diameter so that it can be removed easier. The straps are not necessary, you can cut them off and the cap will hold quite well.