7000 Grit to 10000 Grit: These Grit Sanding Discs are used for professional mirror polishing. -- 240 Grit to 400 Grit: Commonly used for secondary grinding after rough grinding. -- 600 Grit to 1500 Grit: Commonly used for wood furniture, wood, amber, bodhi, gold, silver, copper, aluminum and other materials.
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