Grinding wheels are tools used in various industries for shaping and finishing materials, primarily metals. They consist of an abrasive compound that is bonded together to form a circular shape. When rotated at high speeds, these wheels can grind, cut, or polish surfaces, making them essential in processes like metalworking and woodworking. The composition of a grinding wheel can vary based on its intended use. Common materials include aluminum oxide for general-purpose grinding and silicon carbide for harder materials. Proper selection and maintenance of grinding wheels are crucial for achieving optimal performance and safety during operations.