[Get More Cutting Power]: The ABN 3-Inch Orbital Sandpaper 40 Grit Sanding Disc 10-Pack is a flap wheel kit that is a blend of zirconia and aluminum oxide grain; Round sandpaper discs will self-sharpen for a more powerful, abrasive cut on carbon and mild steel applications | [Reduce Vibrations]: One-sided zirconia sanding disk constructed from resin fiber with a fiberglass backing plate to offer extra strength and absorb vibrations without smudges or smears during use; Orbit sander sandpaper is semi-open to reduce loading on aluminum surfaces | [40 Grit to Remove Heavier Stock]: Angle grinder orbital sander sand paper is designed for working on flat surfaces; 40 grit sandpaper discs are coarser in build to easily work surfaces such as stainless steel, aluminum, and non-ferrous metal; Avoid forcefully pushing down on sand disk to prevent wear or damage | [Fits Your Grinder]: 3-inch overall diameter with 1/4-inch arbor shoulder mandrel (7.6cm x 0.6cm) to get into tight spots and fit standard 3-inch angle grinders (no backer needed for installation); Maximum 12,000 to 14,000 RPM speed | [Package Contents]: Abrasive orbit sander discs package includes (10) 40 grit 3-inch flap orbital sanding paper for your convenience; Use when deburring, removing rust, leveling, stripping, buffing, light grinding, and prepping or finishing flat work surfaces