This 129 pcs abrasive polishing wheel are for DIY polished engraving, polishing (wood, metal, mold polishing purposes). These are fine quality wool grinding heads wheel for electric grinding accessories. Can be used for metal grinding, such as repairing, wear resistance, grinding strength is strong. Features: Wool wheel brushes give polished finish on metal surface with suitable polishing material for the metal. Perfect for jewellery and similar work as they can reach and polish difficult to reach areas. Use soft wool for precious metals (gold, silver, etc). Leave glossy finish on metals. Accurate ground for quick, easy sharpening of saw blades. Widely used in accurate polishing technology and burring, grinding process, and the grinding power is 5 to 10 times higher than general grinding tool. Specifications: Color: White Material: Wool + Iron Polishing Wheel Diameter: 25mm / 0.98", 13mm / 0.51" Wool Wheel Thickness: 8mm / 0.31" Handle Diameter: 3.175mm / 1/8" Handle Length: Approx. 38mm / 1.5" Felt Polishing Wheel Shank Diameter: 3mm / 1/8" Package Size: Approx. 160 * 120 * 30mm / 6.3 * 4.7 * 1.2in Package Weight: Approx. 146g / 5.1ounce Packing List: 50 * 25mm Wool Wheel Brushes 50 * 13mm Wool Wheel Brushes 4 * 3.2mm Polishing Wheel Handle 10 * 3*10mm Cylindrical Grinding Wheel 15 * 3*8mm Conical Grinding Wheel