These Uni-ball Signo RT1 Retractable Gel Pens are a great option for precise writing thanks to their super smooth ink. The pens have a modern barrel with a rubberised grip so that you can write and sketch in comfort. Each pen has a fine, 0.7 mm nib. They’re perfect for writing and sketching. The gel ink is quick-drying and provides a super smooth writing experience. The barrels have a retractable design with a handy pocket clip.