These Pro Polishing pads are the same pads that I include in your orders. They are a micro abrasive foam pad used to re-polish silver, gold and copper. 
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Package includes 10 full size polishers
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Use dry. Using wet will deposit a sticky film over your peice.
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When pad is "full" and stops working as well, you can use some dish soap and water to clean it off, then let dry overnight. This will extend the life of the polishers.