5-50pcs Solid Brass Pure Copper Thread Injection Molding Knurl Embedded Insert Nut Nutsert M2 M2.5 M3 M4 M5 M6 M8 M10

5-50pcs Solid Brass Pure Copper Thread Injection Molding Knurl Embedded Insert Nut Nutsert M2 M2.5 M3 M4 M5 M6 M8 M10

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