The Faber-Castell Ecco Pigment 0.7mm black fineliner offers a wider 0.7mm steel-reinforced tip for technical writing and drawing. Its unchanging black pigment ink does not bleed through the paper and resists fading over time or humidity. The lightweight design with an ergonomic grip zone prevents fatigue during highly detailed work. It is the indispensable precision pen for professionals, engineering students, and graphic artists.