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1/2″-20 TPI (female) to 5/8″-24 TPI (male) Thread Converter-Blued Steel-CZ – SKU#126 – Hughes Precision LLC
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16MM x 1LH(female) to .578″-28 TPI (male) Thread Converter, Heckler and Koch, HK – SKU#058 – Hughes Precision LLC
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