Niji Premier Waterbrushes are a brush and water container combined in one convenient tool. They can be filled with water, ink, or other water-based media. With an easy-fill plunger system, Niji® Premier Waterbrushes are easier to fill and create less mess than other squeeze waterbrushes. Works wonderfully for watercolors and other water-based mediums. Use for watercoloring, rubber stamping, silk painting, bleaching, face painting, coloring books and more! The medium tip measures 1/8″ x 1/2″. The large tip measures 3/16″ x 3/5″. The bullet felt tip measures 1/4″ x 2/5″.