These premium sanding discs are designed for heavy duty sanding and grinding of wood, metal, fiberglass and painted surfaces. The resin bonding system resists heat and moisture, which extends the useful life of the sanding discs. The ultra-tough zirconium oxide grain makes these discs perfect for more aggressive applications like removing welds and finishing of ferrous and non-ferrous material.. • Aluminum oxide durable grains are recommended by professionals for sanding a wide variety of surfaces like wood, metal, fiberglass, and painted surfaces • Heavy duty paper resists tearing, lasts longer • Sand three times faster and last three times longer than regular sandpaper • •
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