This is a high-quality Piston-style twist fountain pen converter from Pilot, Japan. Fits all current Pilot and Namiki pens. Four small metal agitators inside the barrel help break up air...

This is a high quality push-button style fountain pen converter from Pilot, Japan. Fits many larger Pilot pens including Custom 74, Explorer, Justus 95, Kakuno, Metal Falcon, and many Namiki...