US Art Supply Deluxe Brush Washer-Cleaner with Wash Tank & Removeable Screen Rustproof seamless cup holds water or brush cleaner for cleaning paint brushes The spring holder suspends brushes in the liquid so hairs are not damaged Inside the cup is a mesh screen with its own handle to clean the paint off and let it settle to the bottom away from the fine bristles Will keep those oil or watercolor brushes standing up (or down) straight with their heads under water or paint thinner Cup measures 4" Wide x 1 7/8" Deep