Specification :Product Name : Waterproof SandpaperGrit : 500Total Size : 280 x 230mm/11 x 9inch(L*W)Thickness : 0.2mm/0.01inchMaterial : Silicone Carbide,Paper Package Content : 3 x Waterproof Sandpaper Description : 1.Sanding paper sheets are made from waterproof silicon carbide,so it will not fall apart, tear off or crumble off whenever you use it.2.Waterproof and tensile resistant technology enables these abrasive paper sheets sturdy and lasts for a long time using in your projects, and they can be used for both wet and dry purposes.3.The sand Papers are suitable for usage in art and craft, wood, metal, and plastic applications for buffing and polishing.