Zirconium Oxide Ceramic Ball(ZrO2) Specification: The ceramic ball from the diameter φ0.8mm~15.875mm,the quality grade can reach the Chinese standard G5 and G10,our products supply ability is 1.5~3 million balls per month. The mainly Specification form: Specification Specification mm inch mm inch 0.500 4.500 0.800 4.763 3/16 1.000 5.000 1.200 5.556 7/32 1.300 5.953 15/64 1.500 6.350 1/4 1.588 1/16 6.747 17/64 2.000 7.144 9/32 2.381 3/32 7.500 2.500 7.938 5/16 3.000 8.500 3.175 1/8 8.731 11/32 3.500 9.525 3/8 3.969 5/32