Open Stock sold in boxes of 5 pens. Calligraphy is where art meets handwriting! The Pitt Artist Pen with a 2.5mm calligraphy tip offers odorless, permanent and waterproof ink in vibrant colors that will not bleed through most papers. The pigmented India ink is lightfast, acid-free and pH Neutral. Works beautifully on all types of paper and canvas, permanent on porous surfaces. Ideal for calligraphy, creative lettering, journaling, scrapbooking and other paper crafts.