Specification: 5 inch 8 holes loop sanding discs. Widely applicable, ideal for polished metal, wood, jade and so on. Polishing stick plate supporting the use, easy and simple to use. Type: Sanding Disc Material: Aluminum Oxide Quantity: 10 Pcs Model: 60# (Grit), 80# (Grit), 100# (Grit), 120# (Grit), 180# (Grit), 240# (Grit), 320# (Grit), 1000# (Grit), 1500# (Grit), 2000# (Grit) Number of holes: 8 Holes Suitable For: Ished Metal, Wood, Jade and So On. Diameter: 125mm/5" (Approx.) How to use: 1.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. 2.40-60 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. Notes: Need to add sandpaper glued to the sticky adhesive disc to disc fixed polished. Use an electric drill still need to add converter. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 10 x Sanding Discs