Staedtler Marsmatic Jewel Tipped Tech Pens.
When I was selling on the bay of E. I was getting anywhere from 22ish-30 per pen. A few outliers here and there.
Boxed New Old Stock of .45, .70, .80, 1.0 and 1.2.
Ideally looking for US buyer. 100 gets all the boxed ones shipped in lower 48.