Kaweco Perkeo Calligraphy Set, Blue - Steel NibKaweco Perkeo calligraphy fountain pen set is ideal for beginners and professional calligraphy artists. Made from rigid ABS plastic with german engineering ensures a robust product with rugged use. The set includes 3 standard nib sizes. They are 1. 1mm, 1. 5mm, and 1. 9mm. The pack comes with 3 spare blue ink cartridges to help you use the pen for your calligraphy needs instantly.