These 3M discs can be used for a wide variety of cleaning and finishing
needs. Excellent for platinum, gold, silver, copper, pewter and brass
applications. The abrasive in these discs is embedded throughout the material,
delivering continuous exposure of a fresh cutting surface. Flexible,
cool-running bristles remove oxides, texture and polish, and refine surfaces
without messy compounds. Use 3" discs on a tapered spindle. Grit 400.
