All You NeedEach sandpaper measures about 93 x 185 mm; including 4 different kinds of grits, from coarse to fine: 60# 80# 120# 240#, 10 sheets for each grit, total 40 sheets which can satisfy almost all your general polishing requirements.with grit mark on the back, the smaller the number, the rougher the polishing effect, the larger the number, the finer the polishing effect. Premium QualityThe sanding sheets are made of high quality aluminum granules and high strength resin to prevent pilling, mouse sander sandpaper, anti-static and anti-blocking, high strength resin bond system increases service life, good choice for sanding and polishing. Premium Aluminum OxideDurable aluminum oxide grain provides faster cutting, durable and anti-static, anti-sticking - a special anti-clog stearate coating increases performance and durability. 8 Holes BackingWith hook and loop, the sanding sheets are easy to stick on detail sanders quickly, pre-punched with 8 holes for dust extraction. Wide ApplicationThe sanding pads are widely used for wiping rust off metal surfaces and polishing or grinding non-metallic objects, such as plastic, wood, rubber, leather, glass, stone and more. Color: Red Note: 1.For manual measurement, please allow 1-2cm error. 2.The color may have a little difference due to lights, screens, etc.