This 100pcs sanding paper set is perfect for DIY grinding and polishing(wood, metal, mold polishing purposes). These arefine quality sanding disk for electric grinding accessories. Can be used for polishing, such as metal, plastics, aluminium and wood,fine wear resistance. Features: Including 100pcs sanding papers(100-3000grits) in 25mm diameter and 1pcs shank and polish pad. Perfect for polishing of artificial stone, furniture and wood products, metal, automobile. Suitable for smoothing inside and outside curved edges, surface preparation and fit for most electric grinder. For polishing all kinds of metals, iron, aluminum, woods, ceramics, etc. Outstanding value and quality turn your rotary tool into versatile high-speed sander. Specifications: Color: Burgundy Material: Aluminium Oxide + Plastic Applying: Electric Polishing Sanding Paper Diameter: 25mm / 1" Loop Sanding Pad: 25mm / 1" Thread Size: M6*1 Shank Diameter: 1/8" / 3mm Length of Connecting Rod: 45mm / 1.77in Max. Operation Speed: 12000RPM Total Height: 60mm / 2.36in Grits of Sandpaper: 100#, 180#, 240#, 1500#, 3000# (Total 5 size, each size 20pcs) Item Weight: Approx. 40g / 1.40ounce Package Size: Approx. 80 * 45 * 25mm / 3.15 * 1.77 * 0.98in Package Weight: Approx. 42g / 1.47ounce Packing List: 100 * Sanding Paper 1 * 1" 25mm Loop Sanding Pad 1 * Polishing Pad Rod