304 precision stainless steel solid core bearing ball G3 0.5/0.7/1/1.4/1.8/2/2.5/3/3.5/4/4.5/5/5.55/6/7/8mmMicro Precision Beads

304 precision stainless steel solid core bearing ball G3 0.5/0.7/1/1.4/1.8/2/2.5/3/3.5/4/4.5/5/5.55/6/7/8mmMicro Precision Beads

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