Wear-resistant, hard chrome-plated thin tip allows working in exquisite detail. High density of pigment particles for opacity and lightfastness. Line sharpness and adhesiveness. Fast drying on media. Waterproofness. Can be used on a variety of surfaces such as lineboard, tracing paper or vellum drawing paper. Ink bottle not included. Refillable ink reservoir ideal for frequent drawers using bottle inks.