Pigment Liner bonus sketch set of 6 liners- 4 + 2 free pack. Widths: 0.05, 0.1, 0.2, 0.3, 0.5, 0.7 mm. Excellent for writing, sketching & drawing. Lightfast, waterproof, quick-drying smear free pigment ink. Long metal tip for use w/rulers & templates.