Kneadable Erasers are soft and pliable. Excellent for working with graphite, charcoal and chalk pastels, in addition to watercolor. Great for lightening dark areas or removing medium back to almost white to create areas of light. Each kneaded eraser measures 1 5/8 x 1 5/8 x 3/8, plastic wrapped, and in it's own plastic case. Each pack includes 18 erasers.