The Mont Marte Artist Erasers set contains 4 erasers for all your artistic needs. The jumbo super soft eraser is great for large drawings and can be used to lift off highlights with charcoal or graphite. The hard eraser is perfect for harder surfaces such as tracing paper. The medium eraser is ideal for more delicate papers where abrading may be an issue. The black eraser is excellent when used on black paper and will not leave marks that white erasers have a tendency to leave.