**Feature** Uses Rotring， Monteverde or Montblanc cartridges， or converters. A starter ink cartridge is included， the Converter is sold separately. Known for the red ring of quality on every fine writing instrument， Rotring of Hamburg， Germany has been crafting pens designed for the modern writer since 1928.High-tech Core Fountain pens from Rotring are modern， contemporary and the ideal writing instrument. Its styling is detailed with an ergonomically shaped design of its grip section. Striking ribbed barrel provides exceptional writing comfort and control. Comfortable to hold， light and friendly to grip.The Rotring Core Fountain Pen is designed for both righties and lefties. Rotring Core Fountain pens won't slip，and help to keep your fingers in a relaxed position.