Pin Hole Blue Zirconia Discs - Fine, 7/8" (100)

These 7/8" Fine Blue Zirconia Alumina Sanding Discs are ideal for use with platinum and work well on gold and silver. These discs are resin-backed for superior durability and aggressively cut and grind metals with a uniform file-like finish. Last up to three times longer than conventional abrasives. Pin-hole centers. Use with a screw mandrel (sold separately).