Rockwell Tungsten Carbide Ball Indenter for HRBW scale 1.588mm / 0.063in Rockwell Tungsten Carbide Ball Indenter for HRBW scale 1.588mm / 0.063in ,Rockwell hardness tester Tungsten Carbide Ball 1.588mm / 0.063in Indenter Special specifications and dimensions can be customized. Gliyas Model GL-Rockwell Tungsten Carbide Ball Indenter Tags Rockwell Tungsten Carbide Ball Indenter Tungsten Carbide Ball Indenter