This is a bit holder for the Milwaukee M18 hammer drill model 2904. It screws to the same spot where the belt clip is screwed with #6-32 screws. It has a place to insert an optional 6mm x 3mm magnet. I include two models, one with tighter tolerances. I printed it in PLA with three walls and 15% infill.
The author marked this model as their own original creation.