This gel ink pen has a quick-drying, water-based ink that creates a smooth universal writing or sketching experience whether you're left or right-handed, and prevents bleed-through on paper. The ink comes in vibrant black or navy (blue black) with a 0.5mm tip. It also has a built-in mechanism to prevent ink from drying out or flowing incorrectly. The pen has a clip for easy storage in a pocket, lanyard, or closed notebook, making it perfect for on-the-go use. When the ink runs out, they can be easily refilled. Easily know the ink levels thanks to the clear frosted pen body. Comes in a set including 10 pieces of 0.5mm Smooth Gel Ink Knock Type pens in the colour of your choice. The pens do not include individual labels.