In Kaweco's history the PERKEO dip pen appears around 1900. The catalogue of the Heidelberg dip pen factory which was later named Kaweco, describes the PERKEO as a convertible foutain pen. Today PERKEO is designed to be an ink cartridge fountain pen and a convertible fountain pen. The design stems from the classic Kaweco tradition. The matt octagonal cap and the sixteen-edged barrel harmonize perfectly. The ergonomical grip section inures an effortless writing experience and the colours are very unique. Suitable for Long and Standard Sized Converters. With steel nib sizes F/M. The Perkeo is a new entry-level full-sized pen from Kaweco. The faceted body and grip are made of a white/grey resin, and the cap is made of blue resin. The triangular grip helps keep your fingers in the proper grip position. It comes complete with a silver stainless steel fine nib. It accepts standard international ink cartridges, or you can also purchase a converter separately.