Features: Works well on metal and non-metallic materials of various complex surface rust, paint, deburring, solder joints sanding and polishing. Widely used for artificial stone, furniture, wood products, metals, automobiles grinding and polishing, etc. The utility model has the advantages of convenient use, simple operation and low cost. Terrific for general polishing and has the ability to work with semi-rough finishes to refine them to a smooth luster. Can be used with a polishing compound to produce a smooth finish. Specification: Material: Alumina Weight: 43g Diameter: 25mm/1inch Shape: Round Shank Diameter: 1/8" Quantity: 100pcs Color: As pictures shown Model: 100P, 180P, 240P, 1500P, 3000P Package Includes: 20 x 100 Grit Sanding Paper 20 x 180 Grit Sanding Paper 20 x 240 Grit Sanding Paper 20 x 1500 Grit Sanding Paper 20 x 3000 Grit Sanding Paper 1 X Loop Sanding Pad Note: 1. Please allow 1-3mm 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.