The Quartet® EnduraGlide® Dry-Erase Markers are a set of four assorted color markers designed for use on whiteboard surfaces. These markers are eco-conscious, using less harsh chemicals in their formulation. Made by ACCO BRANDS USA, LLC, they are a high-quality product perfect for office or classroom settings. The markers come in a pack of four and are ideal for keeping important notes and ideas easily accessible on a whiteboard.