Upgrade your sanding experience with these 5 - inch 8 - hole Zirconia hook & loop sanding discs. Available in grits 80, 120, 150, 180, and 220, with 10 discs per grit in a 50 - pack. These discs are made of premium Zirconia Alumina abrasive on a heavy - duty green polyester film backing. They offer extreme durability, up to 5 times longer life than common aluminum oxide discs. Their anti - clog coating and 8 - hole design ensure efficient dust extraction, maintaining full cutting power. Ideal for heavy - duty material removal on wood, metal, and auto surfaces, they can be used for both wet and dry sanding. Compatible with most 5 - inch random orbital sanders from major brands, they're a versatile choice for all your sanding needs, delivering a uniform finish and making your sanding tasks easier and more efficient.