Abrasive Disc

https://www.rmcabrasives.com/products/abrasive-disc/

Abrasive discs are circular tools made of abrasive materials attached to a base, typically made of fiberglass, plastic, or metal. Abrasive discs are used for a variety of tasks, such as grinding, sanding, polishing, and cutting. Abrasive sanding discs can be attached to power tools, such as angle grinders, bench grinders, and sanders, and come in a variety of sizes and shapes to suit different applications and materials.