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 that will need cleaning afterwards,reducing the amount of time needed to finish the job. These discs do not generate the same amount of heat as rubber wheels do. Can be used individually, or stacked. Note: Bristle brushes up to 1diameter use with mandrel hole 16or 1 Those of 2& 3are to be used with adaptor mount, No. AB-535.
3M Radial Bristle Discs.
Diameter: 9/16", Sold in box of 48.