The finest India ink in a practical dual drawing pen! Pitt Artist Pen Dual Tip Markers are perfect for sketches, drawings, layouts, fashion design, illustration, and more! Archival pens contain water-based India inks that are highly pigmented for excellent lightfastness. India ink is pH neutral, acid-free, odorless, permanent, smudge, and waterproof when dry and will not bleed through most paper. Easy-to-use dual-tip markers feature a smooth, flexible brush nib for artistic work and a metal-encased fiber tip for detailed drawings and outlines. A large, durable brush nib retains its shape and allows for varying line widths and vast coverage. 0.8mm metal-encased fiber tip is sturdy and ideal for fine lines, lettering, contours, and accents. Mixed media, hand lettering, calligraphy, and sketch artists will enjoy the versatile ink characteristics, dual nib combination, and the buildable, bold color selection: Cadmium Yellow, Dark Chrome Yellow, Scarlet Red, Deep Scarlet Red, Middle Purple Pink, Purple Violet, Ultramarine, Sky Blue, Phthalo Blue, Light Cobalt Turquoise, Dark Phthalo Green, Leaf Green, May Green, Chromium Green Opaque, Cinnamom, India Red, Green Gold, Dark Sepia, Cold grey III, and Black. Dual brush pens also feature a large ink reservoir with corresponding barrel colors and roll-away safety caps. The Dual Tip Marker's caps are interchangeable and prevent the artist's pens from rolling off or away from the work surface. Pitt Artist Pen Dual Markers are packaged in a cardboard wallet, great for storage and the environment! Due to high pigmentation, dual-tip markers should be stored horizontally. Since 1761, Faber-Castell has created premium quality professional art supplies for artists of all skill levels. Faber-Castell products including Pitt Artist Pen Dual Markers, are made in Germany providing unsurpassed quality and performance for any artist.