Everything You NeedEach sandpaper measures approximately 93 x 185mm; including 4 different grit types, 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 the grit mark on the back, the smaller the number, the greater the effect of rough polishing, the larger the number, the finer the polishing effect. Premium Quality The 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 bonding system increases service life, good choice for sanding and polishing. Premium Aluminum OxideDurable aluminum oxide grain provides faster cutting, long lasting and anti-static, anti-sticking - special anti-clogging stearate coating increases performance and durability. < p>8 Holes Backingwith hook and loop, sanding sheets are easy to stick on detail sanders quickly, pre-punched with 8 holes for dust extraction. Wide ApplicationSanding 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. Due to factors such as manual measurement and differences in display, there may be slight differences between individual products and images, please excuse me.