Create a watercolor masterpiece with the Aquash Water Brush. Fill barrel with water, and blend powdered pigment, watercolor crayons and pencils, pastels and more. These brushes are ideal to use with the Pentel Arts Sign Pen Brush products. Easy to control the water flow with just a squeeze of the barrel, and the durable nylon tip gives a sensitive response for delicate lines and pools of water. Easy to clean and dishwasher friendly, and contain four assorted brush sizes; small, medium, large and flat.