Pilot G2, Dr. Grip Gel/Ltd, ExecuGel G6, Q7 Rollerball Gel Ink Pen Refills, 0.38mm, Ultra Fine Point, Black Ink, Pack of 12 Delivers quick-drying, water-resistant and smear-free results Patented, advanced liquid ink technology formulation offers a consistent, smooth flowing write. Trust Pilot for premium quality performance.