Different types of erasers are an essential part of your drawing toolbox.
A Beginner's Guide To Graphite Drawing Pencils, Erasers and Blenders - Carol's Drawing Blog
Types of Erasers and When to Use Them – The Ink Inquisition
How to Use a Kneaded Eraser
The Best and Worst Eraser Test Against Five Different Mediums — The Art Gear Guide
What are the best erasers for drawing? - Quora
The Best Erasers
What are the best erasers for drawing? - Quora
The Best Erasers For Drawing That Remove Every Mark Easily!
Choosing a Rubber: Comparing Erasers - Jackson's Art Blog