Zebra J-Roller RX Gel Ballpoint Stick Pen, Medium Point, 0.7mm, Translucent Black Barrel, Acid-Free Black Ink, 12-Count 0.7mm medium point, black ink for a smooth, scratch-free writing experience This 12-count of Zebra J-Roller RX gel ballpoint pen features water-based pigment black gel ink for performance that rolls across the paper The fast-drying ink is also acid -free and archival so it won't fade or bleed Uniquely designed with a translucent barrel to easily monitor ink supply Features a grooved finger grip so the pen fits perfectly in your hand