For a smooth and fluid writing experience, choose the Quink ink refill for your Parker® rollerball pen. Each refill is filled with premium Quink ink for clarity of line and richness of color. Use this ink refill to replace the existing Parker® rollerball pen refill, or simply swap out the refill to change your ink color. Refill Format: Standard Rollerball; Refill For Series: Parker® Roller Ball Pens; Refill Ink Color: Black; Color Family: Black.