This set of SAA White Mask, Masking Fluid Brushes and The Society for All Artists Ruling Pen will help improve your use of masking fluid no end!White Mask is ideal to cover up areas you want to leave blank or come back to, and can be rubbed or peeled off using a putty eraser or your fingertips. It offers a traditional alternative to Blue Mask, and is often used to keep the masked area truer to the colour of the paper below, helping you to keep the correct tones in your paintings.Our Masking Brushes make applying our White Mask quick and easy. The tips are made from synthetic bristle, and the brushes can be cleaned using soapy water.They come in a set of three, including one small, one medium and one large (sizes 0, 2 and 4).The Ruling Pen is perfect for applying masking fluid to your painting for fine detail and straight lines.