Zirconia Grinding Balls 1-20mm Our zirconia grinding balls are made from high density zirconia ceramic for ball mill grinding. With high hardness, good toughness and low wear, they deliver efficient grinding and low contamination in wet and dry milling. Key Features High density 6.0 g/cm3 for efficient grinding High hardness and good toughness Low wear rate and low contamination Available from 1mm to 20mm Suitable for wet and dry ball milling Technical Specifications Material