Paper Mate InkJoy 300RT Retractable Ballpoint Pen, Medium Point, 24/Pack, Black (1781569) The technology of Inkjoy: a unique blend of ultra-low viscosity inks and optimized writing tips gives you crisp, clean lines and unparalleled smoothness. The art of Inkjoy: a range of sleek and modern pen designs houses a rich palette of vivid ink colors to dazzle your writing imagination. The 300 series features and extended rubberized grip for optimal comfort in writing. The translucent color-tinted body is modern and stylish while the metal clip is durable and long-lasting. Tip retracts for convenient, one-hand use. 1.0 mm point gives you a nice, solid, smooth line for general writing.