This deluxe water brush from Faber-Castell has a channel that fills easily with water for use with water soluble mediums like Gelatos and watercolor pencils. Thin and smooth bristles flex easily and are durable for ongoing use. Easy to use valve allows you to control the flow of water. Leak proof cap. This water brush is great for taking your projects along wherever you travel. No more messy water cups. Each package includes one deluxe water brush.