Basin has two chambers; one for placing brushes into solvents to avoid damage to hair or filaments and one ribbed area for cleaning brushes. Twenty-four various diameter brush holders around basin rim. Invert lid for a watercolor palette with (4) 1 1/8" wells and (1) 2 1/4" well. Hinged handle for convenient and easy transport. Overall size: 6 1/2" square x 3 1/2" high.