When you use the K103F, K103M, K104F or K104M flange-mount K Connector® launchers, use this soldering fixture to hold a K100 or K100B bead in place while you are soldering the bead into a housing. The bead is inserted into the bead holder and the springy clip holds the bead holder in place. Each 01-106 package includes 5 sets of fixtures.