With the Pentel SMW26 chalk marker black you can make drawings, decorations and texts on non-porous surfaces, such as glass and slate chalkboards. You can easily turn the tip of the marker over so that you can write and draw with both a chisel and a round tip. This way you choose the perfect line width (1.5mm – 4.0mm) for your creative project. With the handy pump system you can easily supply the nib with black ink. This Pentel chalk marker is suitable for indoor and outdoor use. The ink does not run when it gets wet. Remove your design in an instant with a damp cloth. Pentel's SMW26 chalk marker is not suitable for painted wood, MDF and vinyl records.