I know nobody uses overhead projector acetates any more but these pens are good for writing on other smooth surfaces too! Two are effectively very fine permanent markers and the other four have thicker nibs and the ink wipes off a smooth surface with a damp cloth.
If interested please say when you can collect from OX2 around 1 mile off Botley Road (not in Wytham). Or if you're in OX2 I may be able to put it through your lettervox
overhead projector pens - 4 permanent, 2 non-permanent (Wytham OX2)
This offer has been gifted to someone and is no longer available.