Pink Pearl, Kneaded Erasers, Erasing Shields, Refills for Eraser Pens.
Kneaded erasers are soft and bendable so that you can knead them into any shape. Kneaded erasers are great for creating subtle changes.
Gum erasers are comparatively harder. These are good for revealing white highlights.
Blending stumps are also called tortillons. They are good for blending in smaller details.
These can be used for blending large areas. These are also effective for rubbing vine charcoal sketches.