Using the Erase Tool in Blender Grease Pencil - BlenderNation
Editing — Blender Manual
Definite White Paper Stump/Art Blender/Tortillons with Kneadable Eraser, Pencil Extender & Sand Paper for Graphite Charcoal Pencils (Set of Stumps, Kneadable Eraser, Pencil Extender & Sand Paper) : Amazon.in: Home & Kitchen
How to Delete or Erase objects in Blender - YouTube