Check out my other model that is a screwdriver bit that is for flathead/ Slotted 

[https://makerworld.com/en/models/2551991-screwdriver-bit-slotted#profileId-2810690](https://makerworld.com/en/models/2551991-screwdriver-bit-slotted#profileId-2810690)

Model UPDATED Print profile v2 has been added  to adjust the sizing to make it suitable for a drill bit but bigger so you can use with hand tool also made it smoother for less stripping on the screw, I also added a extra lip to be able to have a better grip on the bit!!

Download the version 2  print profile marked as designer and adjust if needed 

high quality screw driver bit x

Works with drills