This versatile 10-piece set of 4-inch sanding discs includes multiple grit levels (320#, 600#, and 1200#) for all your polishing needs. Perfect for use with flat grinding machines and stone polishers, these wet/dry sanding pads allow you to progress from coarse to ultra-fine finishing. The 320-grit discs effectively remove material and level surfaces, while the 600-grit provides intermediate smoothing. The 1200-grit discs deliver superior fine finishing for a professional polish. Each disc features a center hole for secure mounting and even wear distribution. These durable sanding discs are ideal for working with stone, metal, and other hard materials that require precision surface preparation. The varied grit selection lets you achieve exactly the finish you need, from initial shaping to final polishing. Compatible with standard 4-inch pad holders and polishing equipment.