Arteza Water Brush Pen - Self-moistening - Portable - Watercolor - (Assorted Tips, Set of 4) Set of 4 - Includes 2 x fine, 1 x medium, and 1 x broad tip water brush pens Durable nylon fiber tips hold their point and are easy to clean with water Self-moistening & portable - ideal for travel and art classes Control water flow with EZ-SQUEEZE transparent barrel Works well with watercolors, water soluble colored pencils, real brush pens and more