Created this for myself but sharing as normal.

It is a pen shell that looks like a screwdriver and accepts a commonly found pen insert (See pic). 2 Stem Variants so far:

Insert from :BIC Round Stic pen" - "Use: Screwdriver Pen-Stem(TypeBic Round Stic).stl" Some promotional hotel pens (Marriott Chase Bank etc) - Use: "Screwdriver Pen-Stem(TypeA).stl"

Difference between the two is that these promotional ones have slightly skinner diameter

If I come across other variants, I will adjust the stem for those too but the above two should cover most pens with tips of this style.

Feel free to print, share, sell, remix etc My only enjoyment would be seeing people's makes so if you like it, 'Post your make' to say thanks.