Fountain Pen Medium Nib With Ink Cartridge and Converter by Feeney Fine Writing Instruments. One of the finest fountain pens of the world for under a hundred dollars, ink cartridge & converter Reliable performance with smooth ink flow, writes comparable to a high end German fountain pen Pens come in four colors: black, translucent black, blue & red Our fountain pens vintage and modern are the perfect gift for the holiday season Take advantage now of our fountain pens on sale and experience their excellent ink technology