The 3M™ Microfinishing PSA Film Disc 268L features micron-graded aluminum oxide mineral, which is bonded to a durable polyester film backing, to produce a fast cut-rate and uniform finish on wood, solid surface composites, metals, plastic and fibreglass.The 3M Microfinishing PSA Film Disc 268L is a resin-bonded disc that has great flexibility and won't sacrifice durability and reliable performance. To complement the effective cut of the aluminum oxide mineral, the polyester film backing flexes to help achieve a consistent finish over contours and offers greater tear-resistance than comparable paper products, making it ideal for high-production environments. This disc is ideal for sanding plastics, paint, e-coat and wood, as these projects often require an abrasive that will maintain the integrity of the underlying workpiece. Its uniform cut and soft scratch pattern help prep the workpiece for fresh paint or other coatings. The disc includes a pressure-sensitive adhesive (PSA) backing to help hold the disc securely in place during use.