Avoid running out of black ink with 207 Plus and 307 Gel Pen Refills. Stainless steel tip resists bending and breaking. Medium point (0.7mm) produces rich, clean lines even on glossy paper. Advanced, nano-fiber, gel ink creates an enhanced writing experience with exceptional smoothness, drying speed and line intensity to communicate brilliantly. Ink resists smudging and smearing, making ink ideal for everyday writing tasks, taking notes and signing documents. Refills feature uni Super Ink Plus to entrap ink into paper, producing fraud-resistant, fade-resistant and water-resistant documents that prevent check washing or bleaching.