Pentel Arts Brush Tip Sign Pens offer richly saturated colors that are fully blendable with water and Pentel Sign Pen colors. Dilute the tip with water to get a full range of values. The waterbased dye ink is bright and intense. Every pen has a wear-resistant, pressure-sensitive, flexible tip for creating different techniques, including feathering, cross-hatching, outlining, calligraphy, and detailed line work. Pentel Arts Brush Tip Sign Pens have a secure snap-tight cap that prevents dryout when left uncapped. The cap can be cleaned easily with a paper towel.