The glass muller has short-domed ergonomic handle which is comfortable to hold and it helps manually milling the paint easier. This glass muller is perfect for making your own watercolours. The rough surface allows the pigments to be ground thoroughly, resulting in an even, vibrant colour. It sits comfortably in the hand, is robust, well made and easy to clean. A versatile, indispensable tool for artists who want to mix their own colours.