Scotch-Brite™ Surface Conditioning Disc comes in a wide variety of grades and sizes and is an ideal first-step for cleaning, blending, deburring, and finishing. Durable, non-woven fiber construction conforms well on irregular or contoured surfaces without undercutting or damaging the base material. - Scotch-Brite silicon carbide surface conditioning disc comes in a wide variety of grades and sizes and is an ideal first-step for cleaning, blending, deburring and finishing. Durable, non-woven fiber construction conforms well on irregular or contoured surfaces without undercutting or damaging the base material. Aluminum oxide is suitable on a wide variety of substrates in both woodworking and metalworking, including ferrous alloys.