3M™ Hookit™ Gold Film Disc 255L features aluminum oxide abrasive grain on a film backing for a fast cut-rate and uniform, close-tolerance finish on wood, paint prep, and defect repair applications. Our flexible film backing provides a consistent finish and greater tear-resistance than a comparable paper product, making it well-suited for a high-production environment. Our 3M™ Hookit™ Hook-and-Loop Attachment allows easy re-use when switching between grades before the discs are worn out. The open coat feature provides a more aggressive cut than a comparable closed coat abrasive of the same grade. The disc's load-resistant coating reduces clogging of the disc, making this a good choice for woodworking and other applications where loading hinders performance. Designed for use with a random orbital sander, this disc comes in a range of grades for fine sanding and finishing and is resin-bonded for reliable performance under high heat and pressure. The disc's aluminum oxide abrasive is a popular choice among industrial professionals because of its fast cut-rate and long life. This mineral makes a tough, durable abrasive that self-fractures to expose fresh cutting edges, whereas traditional natural abrasives dull more quickly. Due to its fast cut-rate, hardness, and strength, it is widely used in grinding applications in addition to sanding and finishing applications. Aluminum oxide is suitable for a wide variety of materials in both woodworking and metalworking, including ferrous alloys.