Push Button Waterbrushes from Derwent feature a large water barrel with push button for easy to control water release. Ideal for use with watersoluble paints and pencils. Portable and convenient for indoor and outdoor use. The durable nylon fibre tip holds shape and point for continuous use. Comfortable handling and leak proof, each waterbrush comes with a protective cap.Contents:Fine tip (2 mm)Medium tip (3 mm)Large tip (4 mm)Large chisel tip (10 mm)