Developed in 2012 for the Federal Bureau of Investigation Special Operation Team's portable radios which featured key load fill radio adapters rather than the traditional radio connector assemblies. The HIROSE manufacturer includes a heat shrink "boot" with each connector. Once the connector has been wired, the assembler was instructed to slip the "boot" over the wires and heat shrink it onto the wires. We did not believe the heat shrink boot to be durable enough -- thus we developed the custom over-mold shown in the photograph