These refills are designed specifically for the 207 Impact™ RT Gel Retractable Pen and feature the same even-flowing, pigment-based gel ink with uni Super Ink™ technology to ensure everything you write is fraud-, water- and fade-resistant. Durable stainless-steel tip with smooth-glide point helps you produce the pronounced lines and lettering that make 207 Impact™ Gel Pens a professional's first choice.