Image shown is actual grain. EX is a "NEW" standard "X" weight aluminum oxide poly cotton coated abrasive material, with a semi-closed coat. It is versatile and relatively inexpensive, providing outstanding performance for the money. EX has a strong poly cotton backing. EX is good for general sanding of both wood or metal. Keystone Abrasives warranties all of our rolls for manufacturer’s defects and your satisfaction is completely guaranteed!