Monteverde Prima Fountain Pen Green Swirl Fine Nib (MV26889F) THIS FOUNTAIN PEN HAS A LARGE STAINLESS STEEL NIB. CARTRIDGE CONVERTER FILLNG SYSTEM THE COLLECTION HAS A MATCHING ROLLERBALL AND BALLPOINT PEN. FOUNTAIN PEN TAKES STANDARD INK CARTRIDGES G306,G302,G303,G304 SERIES