The Faber Castell Pitt Brush pens have been a huge hit at summer conferences. Recommended by Linda Schneider, these pens offer an elaborate color line and an easy to use tip. Smaller sizes are perfect for envelopes, and the larger brushes are excellent for larger lettering. The ink is pigmented, light and water resistant, and acid free. Write on paper, fabric and even rocks with ease! These are pens you will certainly want in your collection.