3.High chrome cast balls
Size: 17mm-150mm
Hardness:HRC58-65; Chrome content:11-27%
4.Low chrome cast balls
Size: 17mm-150mm
Hardness:HRC45-55; Chrome content:1-3.5%
5. Medium chrome cast grinding balls
Size: 17mm-150mm
Hardness:HRC50-60; Chrome content:5-8%