S-2 Tool Steel balls as a kind of hardened and high toughness ball, they provide good service in withstanding the abrasion of pulverized rock and mud slurries. As the most frequent application of S-2 rockbit balls are applying in drilling, so when make this kind of balls, they should achieve very good ruggedness and the smooth ground and polished finish also required. These balls offer the tenacity and strength which necessary for severe shock loads.