Shimano EW-JC200 E-Tube Junction 2 Port

The EW-JC200 2 port junction is a female-female junction box that allows wires to be connected together to increase their length. This gives you greater flexibility when running wiring on larger frames or in tricky wiring cases with additional shifter. For use with Di2 and E-Tube wiring.. Model: EW-JC200
. Type: Female-female two port junction
. Use: Di2/E-Tube