Designed for high-performance grinding and finishing, these flap discs feature a durable zirconia grain that ensures a long lifespan and exceptional material removal capabilities. With a size of 4-1/2 x 7/8 inches and a grit of 60, they are ideal for steel applications, providing both efficiency and a smooth finish. The poly/cotton backing enhances durability while maintaining the necessary strength for demanding tasks, making them a reliable choice for use with high-output angle grinders. Packaged in boxes of 10, these Type 27 flap discs are a must-have for professionals seeking quality abrasives for their welding and gas essentials.