| Brand | Unbranded |
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Check the listing for details. 100 pcs 1.8mm Silicon Nitride Ceramic Ball G5 Class. Condition: New. Listed at 14.10 USD. At 800 ℃, the strength and hardness remain almost unchanged, with a density of 3.20g/cm3, which is almost 1/3 of the weight of bearing steel. When rotating, the centrifugal force is small, and high-speed operation can be achieved.