The sharpness and friability of these silicon carbide discs combined makes these sanding discs extremely effective at grinding on non-ferrous materials such fiberglass (boat hulls), quartz, terrazzo, concrete, marble, stone, brick, limestone, quartz, masonry, porcelain, as well as enamels and hooves. As mentioned above, these discs are load-resistant allowing them to cut through thick, adhesive-type coatings that would ordinarily load up a diamond cup wheel with ease and minimum build up on the disc. These discs are clearly very versatile so it comes as no surprised that they have useful applications in industries ranging from plumbing to ship building to masonry, construction (specifically pre cast and pre stressed concrete), flooring, etc.