This range of miniature Lemo cable plugs is commonly used on lavalier wireless microphones by Sennheiser, Trantec and Micron. Strain relief boots are available and must be ordered separately.
The FGG connectors can be terminated with a fine soldering iron and a couple of small spanners. The FVB connector again has solder contacts, but has a crimp rear body requiring a 2.7mm A/F hex crimp tool. The correct crimp tool from Lemo is very expensive, while our RF crimp tool NCT CCT with 2.54mm & 2.9mm hex sizes can be used and is less than half the price. The FVB connector also has a rear screw ring, for which there is again a special assembly tool, but it should be possible to perform a one off repair without this.