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Designed and manufactured with precision for optimum performance. This is an easy-flowing, high opacity ink with excellent adhesion, suitable for tracing paper, vellum, drawing paper and lineboard. Calligraphy nibs, crafted from the finest stainless steel and hand finished for a smooth, precision inking edge. It's lightfast and suitable for all forms of reproduction. Ink has high color purity. Colored inks can be mixed with one another. Limited warranty: guaranteed for 2 years from original purchase date against defects in materials or workmanship. rOtring Isograph Technical Drawing Pen, Liquid Ink, 23 ml, Black.
rOtring Isograph Technical Drawing Pen Liquid Ink 23 ml Black - B000SO412G