Great for cleaning and maintaining hard to reach areas on platinum, gold, silver, copper, pewter and brass pieces. Embedded mineral abrasive is harder than most metals. Removes oxides without messy compounds. These discs do not generate the same amount of heat as rubber wheels do. Can be used individually, or stacked. Use with mandrel hole 1/16" or 1/8". Package of 12
3M 3-Radial Bristle Discs, 3/4" Diameter, 400 Grit, Blue
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