Tungsten carbide ball YG6: Model:YG6 W:94% Co:6% Size:1.0mm-73.5mm Grade: ... G10-G25 Surface:Mirror face Tungsten carbide ball YG6 is consisted of WC-CO ,WC:94%,CO:6%.Density ... ,punching,grinding other media and so on Tungsten carbide ball YG6 is consisted of WC-CO ,WC:94%,CO:6%. Density ... speed. Usage:Bearings,punching,grinding other media and so on YG6 Tungsten carbide ball