Uni-ball signo gel pens contain a smooth flowing gel ink which delivers bold, vibrant colours that stand out from the page. Each pen has a soft grip which keeps you comfortable while you're writing. Each pen contains a fine 0.7 Mm size nib. They're perfect for detailed, precise and controlled writing and drawing. Each pen contains smooth flowing gel ink thanks to the twin-ball mechanism which prevents ink back-flow. The grip colour matches the ink colour so you can easily identify the right pen. This pen contains red ink.