The 1/4-inch-thick Metal A AO Type 27 grinding wheel makes quick work of offhand stock removal on 400 series stainless steel, and hard and soft carbon steels. With a quality aluminum oxide abrasive and a high-performance bond, this wheel provides a fast cut rate and an excellent wheel life, increasing productivity and keeping downtime to a minimum. The low initial price makes these wheels a great economical choice for smaller jobs.