The Parker 1950385 C/5 Quink Black Blue pen refill set provides a deep, dark blue hue of great distinction for fountain pens. The set includes 5 Quink Black Blue ink cartridges with standard Parker fittings, formulated to dry quickly and prevent smudging on paper. The Black Blue color lends a touch of formal elegance and personality to handwriting. It is the perfect choice for signing official documents, personal diaries, and executive writing.