... ,LC,ST,FC,MU fiber optic connector APC,UPC,PC,SM,MM Simplex,duplex fiber connector kit SC/UPC SM fiber optic ... connector 2.0 Single modemulti mode Insertion loss ... ,concentricity≤1.0128.0um,concentricity≤3.0 The connector pre-assemblied kit or one piece are available.Boots in various of color.black ...