Twsbi Vac 700 R

The TWSBI Vac 700R is a modern, demonstrator style fountain pen featuring a high capacity vacuum filling mechanism and an ink shut off valve for secure travel. An update to the original Vac 700, the "R" version features improved ink flow, a single large valve, and a redesigned grip. It is popular for its user serviceable design, coming with tools and silicone grease.