Uni-ball Jetstream Extra Fine Point Retractable Roller Ball Pens,-rubber Grip Type -0.5mm-black Ink-value Set of 10 Extra Fine Point-0.5mm- Writes amazingly smooth while providing crisp, vivid lines Quick-drying ink helps prevent smearing - perfect for left-handed writers Features uni Super Ink- specially-formulated to become trapped in paper, helping prevent criminal check washing and other document alteration Form-fitting rubber grip for writing comfort