2inch Sanding discs are made of aluminum oxide material. The open nylon web structure with better elasticity and plasticity for objects of various shapes. These surface conditioning discs include coarse grit, medium grit, and fine grit, and the superior hardness particle provides strong and fast cutting force, enables it can work well on various shapes surface, even the rugged ones. These roll lock discs are not only good for cleaning and finishing on stainless steel, alloys, non-ferrous materials, and almost all kind of metals, but also can be used for the removal of light rust, oxides, and coatings. These abrasive sanding discs are ideal for deburring, finishing, and easy operator assembly. They are suitable for die casting parts, bicycle parts, machinery, knives, and many other items. Besides, these die grinder sanding discs can easily connect with almost all drill drivers, such as air or electric drill, die grinder, and other rotary tools, achieving the utmost sanding control. These sanding discs are made of aluminium oxide material, which has elasticity and plasticity. These surface conditioning discs are divided into coarse, medium and fine granularity. These quick changing discs are good for cleaning and finishing on stainless steel, alloys, non-ferrous. These die grinder sanding discs can be used for removal of light rust, oxides and coatings. These flap discs are suitable for die casting parts, bicycle parts, machinery, knives. These roll lock discs can easily connect with almost all drill drivers and save your time. Package Includes: 15 x Coarse Grit Roloc Surface Conditioning Discs - Yellow, 15 x Medium Grit Roloc Surface Conditioning Discs - Red, 15 x Fine Grit Roloc Surface Conditioning Discs - Blue, 1 x Rubber Disc Holder with 1/4? Shank.