Parker 3016031PP PARKER QUINK Long Fountain Pen Ink Refill Cartridges, Blue, 5 Count Ink refill cartridges designed exclusively for PARKER fountain pens Convenient long cartridge keeps ink contained for effortless refilling Richly pigmented ink makes a vivid impression on the page Cartridge design allows you to easily use your fountain pen wherever you are Includes 5 Blue ink refills