• Superior empty brush small. Easy to use & reliable, Size: Small. Using for arts and craft and painting work purposes. High quality. 1 piece in the pack.

• Wettability Control - Control the ink or water flow with just a squeeze of the barrel of the pen. Blend with water or add ink to barrel for fast, easy, and fun painting or calligraphy. ... Multi-Purpose - Brush pen can apply to artist watercolour, gouache painting or colouring, body or face painting and even ink calligraphy. 

A water brush is unlike any other brush. It consists of a familiar-looking bunch of bristles at the one end, but the handle isn't solid wood or plastic. Rather, it's a container or reservoir designed to hold water. As you use the water brush, water gradually seeps down from the reservoir onto the bristles.