Rotring Bottled Ink for Isograph Technical Drawing Pen, Blue, 23 ml

Refill your rOtring Isograph Technical Drawing Pen quickly and easily with rOtring Bottled Ink. This bottled pigmented ink features excellent adhesion for sharp, technically perfect lines. Quick-drying and waterproof, the ink offers a high density of pigment particles for optimum opacity and lightfastness. It can be used on a variety of surfaces, including lineboard, tracing paper, and vellum drawing paper. - Bottle of replacement ink for rOtring Isograph Pen - High density of pigment particles for opacity and lightfastness - Fast-drying, waterproof formula - For use with lineboard, tracing paper, and vellum drawing paper - 23 ml bottle of blue ink