These Staedtler double-ended permanent pens have both a broad and narrow tip, so you won't have to change pens as often. The tips are bullet shaped, with the broad tip producing lines of 3 mm in width, and the narrow tip producing lines of 0.5 mm. Their ink is water-based and permanent and quick drying, making them ideal for use on a wide range of surfaces including paper, glass, stone, metal, plastic, textiles and wood.
18 Pack