Scotch-Brite(TM) EXL Unitized Wheel, 6 in x 1 in x 1 in 2S FIN, 2 per case High performance and durability for deburring and finishing applications. A layered, durable unitized wheel construction. Soft, conformable, flexible 2 density. Abrasive mineral: Fine grade silicon carbide. Color: Gray MOS: 5000 RPM