Hook-and-loop backing enables quick disc changes on standard dry sanding machines Pack of 5 x 9 inch aluminum oxide sanding discs with 0.1 mm thickness Grit range from fine to coarse to address small irregularities or restore an entire piece of furniture Suitable for hard and soft wood, rubber, leather, plastic, stone, glass and metal Broad applicability from woodworking to polishing metal and removing rust; suitable for metal, wood, plastic, rubber, glass, stone and other materials Applications: for furniture, cars, yachts and other industries with complex surfaces made of metal or non-metal materials; include painting, deburring, and smoothing solder joints Specifications: material: aluminum oxide; thickness: 0.1 mm; diameter: 9 inches; pack: 5 discs Use scenarios: - Smoothing a wooden tabletop to remove minor dents and blemishes - Deburring metal brackets and smoothing solder joints in metalwork - Prepping car panels or yacht hulls for painting by removing rust and creating a uniform surface