The EW-JC200 2-port inline junction allows you to connect two EW-SD50 electric wires to each other. The most likely scenario where you'd need to do this is when using the EW-JC130 Y-connector and a bar-end junction box.
Note that the JC200 and the EW-WU110/111 are about the same size, but the latter also adds wireless communications to the system. If you need a 2-port junction it may be worth it getting the Wireless Unit instead.

Details & specifications
Shimano model code | EW-JC200 |
Shimano model name | Inline 2-port junction |
Weight | 0 g |
Series | Ultegra, DURA-ACE |
Downloads | EW-JC200_manual |
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