Come and see our amazing products. Every pen will give you a smooth writing experience with no smear.Water-based ink,easy to flow,odorless, acid-free, non-toxic, dry fast. It's safe for kids.The fine line color water-based hook line pen set comes in 12 colors. Our fine line pen is a 0.015 inch smooth fine tip pen, each pen is about 6.2 inches long and 0.3 inches thick. Used for diary, coloring, writing, taking notes, etc. In addition, we can print our own logo on each pen, please contact us if you need it. Pls confirm with us about the packing info, stock color and exact production time before placing your order.