https://prosupplycenter.com/product/1998/carborundum-medalist-ceramic-grain-fiber-discs-9-1-8-inch/
Carborundum Medalist Ceramic Grain Fiber Discs 9 1/8 Inch
Carborundum Medalist Ceramic Grain Fiber Discs 9 1/8 Inch. Ceramic self-sharpening abrasive. Ideal for high-pressure and heavy metal removal applications....
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