Yttrium Stabilized Zirconia Milling Media MSE Supplies offers yttrium stabilized zirconia beads ranging from to 30mm. Ceriastabilized zirconia milling media beads are also available. Sort by 15 mm Cylindrical Premium Yttria Stabilized Zirconia YSZ Milling Media, 1 kg 9490 Milling Media Set for 250 ml Zirconia YSZ Planetary Mill Jar 13500