STA Pigment Liner ( Drawing Pen ) Sr 8050
The black pens are smooth, non-toxic, waterproof and acid-free. They will not smear, fade, bleed or skip. Also they are lightweight and comfortable to hold. With the cap of each pen, you can keep them neatly organized so that you don't need to worry about smudging yourself, with nice black ink, they can come out smoothly and dry quickly. The waterproof pigment liner pens are suitable for architecture, ultra-fine liner, writing, engineering, detail space, drawing and more.