The Pentel Hyperaser is designed to erase dried ink from paper surfaces, and contains fiberglass to help rub ink out. The flat, wide shape is perfect for erasing small details and does not bend when used. It works very well on high quality papers such as vellum or hot-pressed cotton watercolor paper. Refills available.
Eraser dimensions: Approximately 4.8 inches (12.2 cm) X 0.4 inches (1 cm) X 0.1 inches (3 mm).