90 Pack waterproof silicon carbide sandpaper sheets for sanding wet and dry surfaces Includes 10 sheets of each of the following grits: 400 / 600 / 800 / 1000 / 1200 / 1500 / 2000 / 2500 / 3000 Each sturdy, flexible sheet measures 9 x 3.6 Inch and will not fall apart, tear or crumble during use Grit numbers are printed on the back of each sandpaper sheet for easy identification Suitable for crafts, woodworking, automotive, metal, plastic, grinding, polishing, and more