Stainless Steel Ball Bearing Dia 5-60mm Half Thread M2 M3 M4 M5 M6 M8 M10 - M16. Thread size: M2 M3 M4 M5 M6 M8 M10 - M16. Stainless Steel beads are highly accurate, hard, with a smooth surface, good roundness, resistant to wear and tear, and not easily rusted.
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