Oslong is truly revolutionizing the Industry. Our ultra-premium L338 Sanding Discs provide outstanding durability and precision when compared to typical paper-backed sandpaper discs. Four main technological innovations make this sandpaper the ultimate long-lasting brand, which will convince even the most die-hard brand loyalist to “Go Green:” Firstly, the unique blend of hidden, super-coated aluminum oxide corundum, layered in different densities optimizes dust dispersion and prevents clogging. Our film discs will outlast any competition. You have to see it to believe it. Any knowledgeable craftsman knows that the backing is everything when it comes to quality and consistent performance. Our backing is not paper, but a revolutionary blend of pressure-sensitive film, providing extreme strength, adhesion, and sanding control. Layered-coat technology is employed in production, providing unparalleled evenness of grit and wear-resistance. Our film can be used twice as long as other brands, and will NEVER tear or warp. Finally, in addition to Aluminum Oxide we also blend fine zirconia corundum in scientifically-tested ratios within our abrasives to enhance sanding speed, cutting strength, and to further enhance wear-resistance. 10 discs with PSA "sticky" backing.