Erasers are small tools used to remove pencil marks from paper. They are typically made from rubber, vinyl, or plastic and come in various shapes and sizes. Erasers work by lifting the graphite from the paper's surface, allowing for corrections in writing or drawing. There are different types of erasers, including pencil erasers that are attached to the end of pencils, and larger block erasers used for more extensive corrections. Some erasers are designed for specific purposes, such as kneaded erasers, which can be shaped for detailed work, making them popular among artists and students alike.