The United Abrasives Sait 28040 Type 1 Bench Grinder Cut Off 4 1/2 is a high-quality bench grinder wheel manufactured by ARC ABRASIVES INC. This dish grinding wheel has an arbor hole size of 1/2 inch, making it compatible with various bench grinders. With its durable construction and precise cutting capabilities, this unit is ideal for professional welders, machinists, and metalworkers looking to achieve precise and accurate cuts on various materials.