13.9The Pilot Refills CON-40 Twist Piston Fountain Pen Converter is a new accessory designed for Namiki fountain pens, made of steel. This converter allows for easy refilling of ink by twisting the piston mechanism, providing a convenient and efficient way to enjoy writing with fountain pens. While not handmade or vintage, this converter is a practical addition for pen enthusiasts looking to enhance their writing experience with a reliable and modern accessory.