Image shown is actual grain. These are industrial grade pressure sensitive adhesive backed Blue Film sanding discs. Blue Film is made on a 5 mil PET film base using PREMIUM aluminum oxide grain, with an open coat. Great for automotive, wood, metal, corian, fiber glass and many other disc sanding applications. It has non loading and grinding aids in the resin, that provides excellent life and durabilty. These PSA Blue Film sanding discs are manufactured in the 'Flat Pack Style', each having individual pull tabs for removing the protective liner. Box packaging is available by request. Keystone Abrasives warranties all of our discs for manufacturer’s defects and your satisfaction is completely guaranteed!