Hi folks. Long time lurker here.
I recently acquired the Hero pen shown below. In the past, some of my Hero pens have taken either Parker (mostly) or international standard sized ink cartridges. But for whatever reason, the pen below seems to have a size that seems cartridge incompatible.
Does this mean I can only use "regular" ink with my pen? The number on the pen says it's Hero 386-1.
I have included pictures of other cartridges for size comparison. Any thoughts/pointers would be great!
Edited by Fermion, 18 May 2013 - 01:32.