Size: 3 Inch 75mm Easy to replace - Hook and loop backing makes for easy installation and removal, will not fall apart, tear or crumble off during using. Wet and Dry Using - Made of high quality latex paper, will not fall apart, tear or crumble off during use.That can suitable for both wet and dry use.The larger the grit number is, the finer it is.. Compatible with - Most kinds of rotary tools, such as die grinders, air grinders, electric drills, etc. Please ensure that the buffering pad have connected with the sanding discs tightly before using. Packing Include: sanding discs x grit 80/150/320/400/600/800/1000/1200/2500/3000/5000/7000/10000, each grit 5pcs. Total 65pcs 1pcs x M10 Backing Pad 1pcs x 3-inch interface pads