JJC 銅公1/4螺絲與公1/4螺絲互轉

◎1/4吋公螺牙互轉,將母1/4"螺絲孔轉成公1/4"螺牙

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array(4) { ["type"]=> int(8) ["message"]=> string(21) "Undefined index: file" ["file"]=> string(64) "/home/httpd/html/buy/new/apps/index/include/search/sphinxapi.php" ["line"]=> int(999) }