Precisely graded diamond particles coated on a 2 mil (0.051 mm) thick polyester film provide a consistent, repeatable finish on extremely hard materials. Applications include fiber optic connector processing, flat lapping, super finishing, etc. This is a pack of 25 pcs sheet. Specifications: Color: Lavender Micron Grade: 1µm Substrates: Ceramic, glass, stone, carbide, composites, exotic alloys and other hard to grind materials. Converted Form: 5" Disc Bonding Resins: Medium hardness resin 1um Diamond Film 5” Disc Long life & produces high yields Reduces overall process time & produces superior surface finish Eliminates slurries Consistent results throughout life of product 3M™ Diamond Lapping Films are comprised of tightly graded diamond mineral uniformly coated on a polyester film backing. Enables long abrasive life with a superior finish throughout the life of the product. Available with or without PSA (Pressure Sensitive Adhesive) backing.