GLASS BEADS ABRASIVE Divest all porcelain restorations such as veneers, pressable ceramics, etc. Save your margins - this smooth surface particle is better for cleaning and shaping crowns. Gets into difficult areas. Shines castings without any surface loss and may be used to give alloys a satin finish. Made from only the finest quality materials. Graded to insure particle size uniformity. Packaged in moisture resistant containers.