Backing: Hook and loop, easy and quick to attach, durable and practical Wide range of applications: From coarse to fine, 10-grade matte paper classification to meet almost all general polishing requirements Sand discs made of aluminum oxide abrasive, durable and anti-static. The finer the grit, the smoother the polishing effect Suitable for use with random orbital sanders. Hook and loop backing with pre-drilled 8-hole pattern for efficient dust extraction, easy to use Ideal for grinding and polishing metal, non-metallic materials, wood, rubber, leather, plastic, stone, glass, and more Abrasive: Aluminum Oxide Backing Type: Hook and Loop Color: Reddish brown Diameter: 5 inches (125mm) Pre-drilled: 8 holes Grit options included: 40, 60, 80, 100, 120, 150, 180, 240, 320, 400 Note: A converter may be required when used with an electric drill Sandpaper must be attached to a compatible backing pad for use Package Contents: 8 x 40 grit sanding discs 8 x 60 grit sanding discs 8 x 80 grit sanding discs 8 x 100 grit sanding discs 8 x 120 grit sanding discs 8 x 150 grit sanding discs 8 x 180 grit sanding discs 8 x 240 grit sanding discs 8 x 320 grit sanding discs 8 x 400 grit sanding discs Only the above package content is included; other items are not included Note: Lighting and monitor settings may cause slight color variations between the image and the actual item. Measurement allowance: +/- 1-3 cm