A combination brush and water container, Niji Waterbrushes are available in five nylon brush tip sizes and a handle, which doubles as the reservoir. The Small, Medium, Large and Flat brushes all hold 7 ml. of water, and the Mini holds 5-1/2 ml. of water. Niji Waterbrushes may be used for watercoloring, rubber stamping, silk painting, bleaching and face painting. It is also very handy for sealing envelopes or stamps.