Grinding Cups | McMaster-Carr
Heavy-Removal Grinding Wheels for Angle Grinders— Use on Metals. A large grinding surface, combined with a thick layer of rough abrasive removes more material than other wheels. They are also known as Type 11 wheels, flared-cup wheels, snagging wheels, and cup stones. Wheels are often used to grind weld seams and remove flaws from castings.