Never run out of ink with 207 Gel Pen Refills in black. Refills are compatible with uniball 207 Retractable Gel Pens, not the 207 Impact Pens. Medium point (0.7mm) with a stainless steel tip resists bending and breaking. Even-flowing, pigment-based ink delivers a smooth writing experience for intense, vibrant lines, ensuring every mark is brilliantly communicated. Medium point strikes the perfect balance between bold and detailed lines. Use gel ink for everyday writing tasks and signing checks, trusting the quick-drying, uni Super Ink. Innovative, uni Super Ink technology effectively entraps ink into the paper, producing fraud-resistant, fade-resistant and water-resistant documents that prevent check washing or bleaching.