The dual-tip marker has a .5mm tip and a 1.2mm tip in a vast array of colors. The water-based pigment ink is photo safe, acid-free, lightfast, odorless, and xylene-free. The markers should be stored horizontally to prevent tips from drying out.The Writer is great for all types of creative lettering and doodles. Ideal for paper crafts and stamping projects. This package contains one duel-tip marker. Available in a variety of colors: each sold separately. Conforms to ASTM D4236. Imported.