Specifications:Widely applicable, ideal for polished metal, wood, jade and so on.Polishing stick plate supporting the use, easy and simple to use.Sanding papers coated with aluminium oxide bound with synthetic resin are the perfect choice for working of all wood, woodbased materials, and metal, from coarse sanding to fine sanding.40-60 grain are used for coarse sanding of rough surfaces, 80-120 grain are suitable for surface smoothening and sanding of small roughnesses, 180-400 grain are good for final fine sanding.Item Name: Sanding DiscMaterial: Aluminum OxideNumber of Hole: 8 HolesGrit: 40 , 60 , 80 , 100 , 120 , 150 , 180 , 240 Quantity: 5Pcs/SetFeatures: Durable, Wear Resistant, Multi-purposesOuter Diameter: 125mm/4.92" (Approx.)Thickness: 0.1mm/0.04" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:5 x Sanding Discs