Lyra medium moldable rubber Medium hardness moldable rubber to eliminate minor errors, make corrections to unwanted strokes or provide light. This type of erasers are mainly used to create lights in chiaroscuro drawings with graphite, charcoal, pastels or sepia and sanguine. Its soft and flexible texture allows for precise erasing, allowing artists to create clean, crisp lines. It can also be used to create gradient and chiaroscuro effects by delicately blending pencil lines. It is not recommended to use it to erase thick or very dark strokes. Brand: Lyra.