Pen Review: Retro 51 Rollerball Conversion Kit

Pen Review: Retro 51 Rollerball Conversion Kit

I’ve always been a big fan of rollerball pens that use fountain pen ink. I wrote about them a while back and showed a small sample of my personal rollerball-fountain-pen-ink collection. Since that time, my collection has grown. The most recent addition to that collection isn’t actually a pen itself but a conversion kit. Retro…