ZIG BrusH2O allows the artist to have a steady water supply flow directly through the brush tip. BrusH2O portable brushes have a retractable valve giving you complete control over the water release. Waterbrush with a nylon bristle for artist who wishes to paint anywhere at anytime. With water barrel for a natural brush grip and larger water reservoir. Available tip sizes: Detailer, Medium, Large & Broad. Perfect for use with any water blendable colurs and water colour markers, like ZIG Art & Graphic Twin and ZIG Clean Color.