Designed for aggressive applications and heavy-duty use, these zirconia flap discs from CGW Abrasives are an essential addition to any metalworking toolkit. Measuring 4-1/2 inches in diameter with a 5/8-11 arbor, these Type 27 discs feature a grit rating of 80, making them ideal for fast stock removal on steel surfaces. The premium Zirconia Alumina grain, coupled with a durable poly/cotton backing, ensures both longevity and a superior finish, while the unique active grinding aid allows for cool cutting with minimal pressure. With 35% more material than standard flap discs, these discs are engineered to deliver exceptional performance and efficiency, making them a top choice for professionals seeking reliability and effectiveness in their abrasive tools.