Saint-Gobain ZirPro offers a complete range of ceramic beads for the high-energy milling & dispersing of suspensions for the coating industry. At the edge of innovation for more than 40 years, we have optimized combinations of density, hardness and size ranges that enable the highest quality of milling for your particle size reduction process. We manufacture fused zirconium silicate, cerium stabilized & yttria stabilized zirconia ceramic beads that have a density range from 1.65 to 3.8 kg/liter.