Features Light sanding and tarnish removal, fit for your polishing need. Widely used in micro-electronic equipment, jewelry and stamp production and other industries Suitable for metal surface cleaning, derusting, grinding, dusting, deburring, polishing, stripping residue. It is an efficient polishing tool of metal and non-metallic materials in small area of rust deburring and surface polishing. Terrific for general polishing and has the ability to work with semi-rough finishes to refine them to a smooth luster. Features: Light sanding and tarnish removal, fit for your polishing need. Widely used in micro-electronic equipment, jewelry and stamp production and other industries Suitable for metal surface cleaning, derusting, grinding, dusting, deburring, polishing, stripping residue. It is an efficient polishing tool of metal and non-metallic materials in small area of rust deburring and surface polishing. Terrific for general polishing and has the ability to work with semi-rough finishes to refine them to a smooth luster. Specification: Material: Alumina Weight: 170g Polishing Wheel Diameter: 25mm/1in Shank Length: 45mm/1.8in Shank Diameter: 6.35mm/0.25in Quantity: 40pcs Grit: #40/#80/#120/#240 Color: As pictures shown Max Rotate-speed: 25000rmp Package Includes: 10 x 40 Grits Polishing Mop 10 x 80 Grits Polishing Mop 10 x 120 Grits Polishing Mop 10 x 240 Grits Polishing Mop Note: 1. Please allow 1-m error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. Package List