This combination does not exist.
4B eraser has higher toughness than 2B eraser.
It is soft when wiped, and it is not easy to wipe paper.
4B is mainly used for sketch and painting.
Keep your drawings, sketches and art looking clean and fresh by minimizing smudges, lines and errors with artist kneaded erasers.
Product Name: Fearless 4B Rubber
Color: Blue , Green