THR3E STROKES STA Black Pigment Fineliner Ink Micro Pens Waterproof Black Pen Set for Art Sketching Writing, 9 Pieces Fineliner Pen  (Pack of 9, Ink Color - Black)

Good quality: the black pens are smooth, non-toxic, waterproof and acid-free, will not smear, fade, bleed or skip, also they are lightweight and comfortable to hold Convenient to use: 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 Suitable occasions: the waterproof pigment liner pens are suitable for architecture, ultra-fine liner, writing, engineering, detail space, drawing and more Good gifts: fit for professional technical writing and drawing for teachers, artists, writers, illustrators, students, allow you to write clean lines for your everyday use.