Micro Glass Beads for sandblasting Micro Glass Beads are made of hardened spherical soda lime glass and are a multi-faceted and commonly used media. Cost effective, ideal where metal contamination is not allowed, and often used to peen difficult to reach part areas. Full Description : ï?·Does not cause dimensional change to the base material ï?·Environmentally friendlier than chemical treatments ï?·Leave even, spherical impressions on blasted part surface ï?·Low breakdown rate ï?·Lower disposal & maintenance costs ï?·Soda Lime glass does not release toxins (no free silica) ï?·Suitable for pressure, suction, wet and dry blasting equipment ï?·Will not contaminate or leave residue on work pieces