High Performance Steatite Ceramic Balls: Available in percentages of 92% and lower from 0.5mm-60mm. They are easier to use than cylinders and one of the most popular medias for ball milling. Technical Details Density: 3.60 gm/cc. Hardness: 7.5 Composition: Magnesium and Silicate Color: off White Shape: Spherical & Cylindrical Bulk Density: 2.20 kg/l; 4.90 #/l; 8.20 kg/gal; 18.00 #/gal
