H&X glass beads with the quality of clean,transparent,no bubbles and impurity. Widely used in sandblasting,polishing,grinding. H& ... X glass beads with the quality of clean,transparent,no bubbles and impurity. Widely used in blasting,polishing,grinding ... 0.1%UsageGrinding MaterialBS6088 British StandardAASSHTO M247 American Standard High Quality Glass Beads for Grinding, blasting, polishing