Parker Quink Permanent Ink Refill Cartridge for Rollerball Pens, Fine Point, Black (3021331) (2-Pack) Cartridges keep ink contained so replacing it is a clean process, and are fitted with ink reserves ready to be released with a tap when pen is low. Washable ink lays down smoothly, dries fast and won't smear. Innovative Rollerball Free Ink Technology assures an incredibly smooth and intense writing experience. Parker Quink inks are specially designed and formulated to the most exacting standards to ensure that Parker products deliver faultless performance.