Unlike many "brush" pens, the Kuretake Zig Clean Color Real Brush pen has a genuine bristle tip that lets you create marks of any width - from broad strokes to fine lines. Filled with a waterbased dye ink that is odorless and xylene-free, these pens are easy to blend. - Kuretake Zig Clean Color Real Brush Pens - Cool Gray, Set of 6Kuretake Zig Clean Color Brush Pen, 6 COOL GREY - Includes one each of 091 Light Gray, 905 Cool Gray 3, 094 Gray Brown, 095 Dark Gray, 906 Cool Gray 9, and a Colorless Blender.