Electric Wire SD300 for Shimano Di2 External Routing More compact design makes new electric components smaller and lighter Will potentially expand the future capabilities of DI2 systems Compatibility: Dura Ace Di2 9070 / Dura Ace Di2 R9150 / Ultegra Di2 6770 / Ultegra Di2 6870 / Ultegra Di2 R8050 / GRX Di2 RX815 / Alfine-Nexus Di2 / XTR Di2 M9050 / XT Di2 M8050 Compatible with Shimano’s E-TUBE system 2 x SD300 connectors Cord diameter: 2.4mm Plug diameter: 3.45mm Length: 1600mm