Handle for Small Screwdriver

This handle fits a screwdriver with a diameter of 2.9 mm and blades on the sides to keep it from rotating within the handle. I posted the STEP file so you can adjust it to your needs. PLA is fine; I printed it with a variable layer height, but that's not critical. It's OK to use a big height. Recommend printing it standing up so the internal holes come out well. Those are the only critical dimensions in this piece.