The Eraser Pencil with Brush is invaluable for  cleaning up the white paper surrounding an image, including feint grid lines. Drawings can also be made lighter with the pencil eraser which is particularly useful when creating reflections. It can be sharpened to any shape using a craft knife giving you more control than if you had cut slivers from a plastic or soft eraser. The brush is a great additional feature which means you can gently sweep away debris ensuring your drawing stays as clean as possible.