Size: Measuring 6x4 inch (152 x 152 x 105mm), these pre-punched sandpaper sheets are compatible with most palm sanders of this size. The serrated edges allow for easy splitting into two halves, with 11 holes for efficient dust removal and quick attachment.Easy Identification: Each sanding sheet has grit levels clearly printed on the backside for effortless identification.Comprehensive Grit Selection: Comes with 50 sandpaper sheets in 5 different grit levels: 40/80/120/180/240 (10 sheets per grit), providing versatile options for a wide range of projects.Material: Made from high-quality aluminum oxide abrasive, these sanding pads are long-lasting, anti-static, and offer a finer polishing effect as the grit number increases.Excellent Polishing Performance: Suitable for various applications including artwork, woodworking, aluminum, painted surfaces, non-ferrous metals, fiberglass, automotive work, leather, jewelry, stone, plastic, and more, ensuring smooth buffing and polishing results.