Shimano DI2 EW-SD50 E-Tube Wires

E-Tube Di2 wires form the connections of a Di2 system. Shimano's E-tube technology, is a weather-sealed system that allows multi-compatibility and expandability of the Di2 system. Connectors easily click securely into place (always use the approved Di2 wiring Tool) and allow quick install of Di2 e-Tube components. Note: E-tube is a two prong system and is Not cross compatible with Dura- Ace 7970 Di2 wiring