1)Strong anti-wear resistance,Strong hardness 2)High precision, good surface diameter : 0.5mm--50.8mm About us ... ISO 9001:2008 SGS About tungstenball Name of the productHigh-density tungsten alloy ball/tungsten carbide ballMaterialYG6 , YG6X , YG8 , YG8X , YG10 ... freight paid by customer; 9/ MOQ 5kgs for sintered blank; high density tungsten carbide ball/ tungsten alloy ball