Hunan Renowned Trademark: Tongyi brand ISO 9001:2008 certificate We can provide any size tungsten carbide ball you need,guarantee to you the grade rang you required, also the quantiy.Recommended material is YG6,YG8,YG6X,YG8X,etc.It can used where extreme hardness and wear resistance is required; in such applications as bearing, ball screws, values and flow meters.If you have any inquiry, please ...