MD Fountain Pen Converter / MIDORIExpand your ink choices with the Midori MD Fountain Pen Converterdesigned to seamlessly integrate with your MD Fountain Pen and compatible with other pens that accept international standard converters. Key Features International Standard Fit: Compatible with MD Fountain Pens and other pens that accept international standard converters, allowing for versatile use. Piston Fill Mechanism: Features a simple twist action piston, making it easy to draw ink