The MONO twin marker is especially suited for marking and labeling in daily life as well as for outlines of illustrations and other drawings. It writes opaquely on different materials like glass, stone, wood. The MONO twin has two tips: one round tip (approx. 0.8 mm) and one fine tip (approx. 0.4 mm). The ink is oil-based, water-proof and dries quickly. It can be painted over immediately without smearing. Perfect in combination with the bright colors of the Tombow ABT Dual Brush Pens. Color: black. Recycling ratio over 60% of gross weight.