* With this selection of 4 gray brush pens from Sakura Pigma Micron, you can add shadows, depth, visual accents, and layers to illustrations, drawings, bullet journals, and much more. * Pigma Micron pens are permanent and waterproof markers that are highly appreciated by a diverse audience. * The fine tip of this pen is ideal for technical and artistic drawings. * Pigma Micron is the first disposable technical pen to use archival quality pigment ink. * The ink does not bleed, smudge, or go through on most types of paper. * The selection includes the following cool gray brush pens: Pigma Micron 01 (0.25mm), Pigma Micron 05 (0.45mm), Pigma Micron 10 (0.60mm), and Pigma Brush.