... wear-resistance as glass beads,5 times higher as Zirconium Silicate beads and 6-8 times higher as Al2O3 beads.D.Because of ... high viscosity materials.2.Grinding beads sizeφ0.1,φ0.2,φ0.4~φ0.6,φ0.6~φ0.8,φ0.8~φ1.0,φ1.0 ~φ1.2,φ1.2~φ1.4 ... ,φ1.4~φ1.6,φ1.6~φ1.8,φ1.8 ... ~φ2.0 ...