The Kaweco Perkeo petrol blue M fountain pen set with 3 refills ensures smooth writing and extended autonomy in a fully ergonomic design. The 14 cm pen, made of high-quality resin, features a transparent triangular grip zone for correct hand posture, a medium M stainless steel nib, and a secure snap closure. The pack includes 3 ready-to-use international standard royal blue ink cartridges, also accepting standard size converters. The depth of the petrol blue color brings modern elegance and focus to studies and office environments.