3Mâ„¢ Stikitâ„¢ Cloth Disc 900DZ features high-performing 3Mâ„¢ Ceramic Abrasive Grain with a static-resistant, open coat on a flexible adhesive backing for exceptional sanding performance on both contoured and flat surfaces. The open coat abrasive provides a more aggressive cut than a comparable closed coat abrasive of the same grade and is well-suited when loading is a problem, prolonging disc