Block erasers are rectangular or square-shaped tools used for removing pencil marks from paper. They are typically made from rubber or vinyl, which allows them to effectively lift graphite off the surface without tearing the paper. Their larger size compared to traditional pencil-top erasers makes them suitable for erasing larger areas quickly. These erasers are popular among students and artists alike, as they provide a clean and precise erasing experience. Some block erasers even come in different colors and designs, making them visually appealing. They are often used in conjunction with pencils and sketchbooks for various writing and drawing tasks.