Shop Talk: Built for Stock Removal3M™ Cubitron™ II Film Roll 775L is ideal for a broad range of applications focused primarily on stock removal, because the 3M Precision Shaped Ceramic Grain aggressively rids the workpiece of burrs. This film roll may be used on a wide variety of substrates, including metals, composites, gelcoat and whitewood. For additional durability and edge retention, the film backing offers great tear resistance. Abrasive grain is adhered to the film backing in an open-coat construction, meaning that space exists between the grains. These spaces allow debris to escape, which can be especially helpful on workpieces that tend to clog or load a coated abrasive.Engineered to Help You Do More3M precision shaped grains have sharp peaks that easily "slice" through metal. They stay cool, cut fast and last long. Conventional ceramic abrasive grain tends to "plow" through the metal, causing heat to build up in the workpiece and the abrasive — resulting in a slower cut, shorter disc life and undesirable effects, such as brushing. We engineered this grain to deliver consistent results, part after part.