**Feature** Swirling blue acrylic barrel Steel Medium point nib Comes with both ink and the optional converter Barrel holds two ink cartridges or a converter Single fountain pen Writing with a Retro 51 fountain pen is a true joy that needs to be experienced to be fully understood. This pen features a blue and black swirled lacquer body with shiny chrome accents. Measuring 5.5 inches， this pen can hold two ink cartridges， or the ink converter， and comes with both. Medium tip steel nib. Fine and Broad nibs are available for purchase.