The Uni-ball Impact RT Retractable Gel Pen contains smooth-flowing gel ink that produces bold, vibrant strokes. The pen has a soft grip that allows you to write with comfort and control. This pen boasts a 1 mm nib for bold strokes. It's useful for daily writing tasks on paper. The gel ink is smooth-flowing. Thanks to the soft grip barrel, you're guaranteed comfort and control while you write. The retractable design and pocket clip provide convenience. The ink is blue.