Feature●Select from 10 different grinding ball materials to suit your application●Replacement zirconia ceramic ball for grinding vial set 04576-60●Extremely high resistance to abrasion, wears very slowly, and results in little contamination●Measures 1/2" (12.7 mm) in diameter●1 year warrantyDescription Optimize performance of your Spex SamplePrep Freezer/Mill grinding vial sets with a wide range of grinding ball options suitable for your application. Hardness: Mohs 8 ½ Typical composition: Major Element ? Zr; Minor Elements ? Mg, Hf
- Crush, grind, and mill various materials