
20mm High Purity Agate Balls for Laboratory Planetary Grinding Ball Mill Machine. High Purity Agate Material: Contains 97.26% Agate with high fracture toughness and corrosion resistance. Superior Wear Resistance: 30-50 times more wear-resistant than glass beads and 8 times than zirconium silicate. High Grinding Efficiency: 10-12 times more efficient than glass beads and 4-6 times than zirconium silicate. Wide Size Range: Available in sizes from 1mm to 25mm for various grinding needs. Corrosion Resistant: Resistant to acid, alkali, and salt with a smooth, easy-to-clean surface. Customized Options: Customized agate balls available for specific grinding requirements. Fast Delivery: Common sizes delivered within 3-10 days after payment confirmation.