... of its extreme low wear rate. B,high grinding efficiency 1.Advantages: A.Smooth surface,good sphericity .B.The beads have high ... .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,φ2.0 ... : 900Mohs Hardness: 9 TZP beads(Thoughened zirconia ceramic beads)0.1