Specification: Type: sandpaper Material: aluminum oxide Diameter: approx. 125mm / 5 inch Color: as the picture show Model: 40 # (grain), 60 # (grain), 80 # (grain), 100 # (grain), 120 # (grain), 150 # (grain), 180 # (grain), 240 # (grain), , 600 # (grain), 800 # (grain), # (grain), 1000 # (grain), 1200 # (grain),, 2000 # (grain) Number of holes: 8 holes Quantity: 10 pcs Widely applicable, ideal for polished metal, wood, jade and so on. Polishing stick stick supporting the use, easy and simple to use. Synthetic Resin Bonded Aluminum Oxide Coated Sanding Papers are the perfect choice for working all woods, wood-based materials and metals, from coarse sanding to fine sanding. 40-60 grit is used for coarse sanding of rough surfaces, 80-120 grit is suitable for smoothing surfaces and sanding small bumps, 180-400 grit is good for final fine sanding. Package Included: Abrasive discs 10 pieces Note: Need to add sandpaper glued to the sticky adhesive disc to the polished fixed disc. Use an electric drill still need to add a converter Please allow 1-5mm errors due to manual measurement Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.