Wear Resistance Polished Tungsten Sphere carbide balls Good wear resistance:hardness is HRA89-HRA91 Grade:6%cobalt,8%cobalt,8%nickel Precision:G10-G100 Types:Blank ball,rough grinding ball,polished ball OD sizes:0.3mm-100mm Application: Valves, Pumps, Ball Screws, Measurement Standards, Gauging, Wear Parts
