The quality of an eraser and using the correct eraser are crucial for optimum results. Basically, two different materials are used to make erasers: rubber and plastic. All rubber erasers and the majority of the plastic erasers made by Faber-Castell are PVC. The balanced plastic mixture guarantees soft and smear-free erasing.-Excellent for drafting, and erasing details-White, hard eraser leads for ink, India ink and ballpoint pens. Works well for charcoal, graphite and more.-With brush for cleaning up eraser residue-Latex-free