3M™ sanding abrasive discs deliver high performance results. These discs come with aluminum oxide, a tough and versatile mineral abrasive. Aluminum oxide is popular among industrial professionals because of its cut rate and long life. This mineral is a tough, durable abrasive that self-fractures to expose fresh cutting edges in use, whereas traditional abrasives quickly wear down. Due to its high cut rate, hardness, strength and low heat retention, aluminum oxide is highly effective for sanding and finishing applications.