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Brand: ZF/Zuofeng Model: ZF-DB Material: White Steel Origin: Chinese Mainland Province: Jiangsu Province City: Taizhou City Metric: M3 M4 M5 M6 M8 M10 M12 M14 M16 M18 M20 G series: G1/8 G14 G1/2 G3/4 NPT series UNC and all other thread specifications