CARTRIDGE,INK,SKRIP,BE,5PK Sold as 5/PK. Skrip ink cartridge is designed for use with Sheaffer fountain pens (except VFM Fountain Pens) and calligraphy pens. Specially formulated, Sheaffer Skrip Ink will ensure a long write life and a smooth flow of ink. Cartridge is easy to use.