Available in lengths from 150 to 1600 mm, the SD300-I E-TUBE wire for Internal routing from Shimano transmits interactive signals and provides power to E-TUBE DI2 drivetrains. With a compact, waterproof connector, it can be easily routed Internally in handlebars and frames thanks to its "plug & gap" connection. FEATURES With cable tie type for built-in cable routing Newly developed thin electronic cable and port Two core wires Waterproof SPECIFICATIONS Length (choose variant) 150mm 200mm 250mm 300mm 350mm 400mm 500mm 550mm 600mm 650mm 700mm 750mm 800mm 850mm 900mm 950mm 1000mm 1200mm 1400mm 1600mm 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 Color: black TECHNOLOGYE-Tube platform offers optimum flexibility on your bike. E-TUBE transmits interactive signals and power supply to each parts by “Plug & play” connection. E-TUBE is no rust, no stretch, no freeze and it ensures advanced low maintenance. And SM-PCE1 connects between PC and components to update firmware. Digital device stay the latest version with updating firmware for improve function. NOTE The electric cables include only two core wires and the connectors are smaller too with a diameter of 5.1mm (-3.7mm compared to Dura-Ace Di2 7970). Easy plug and play system to connect the cables, which will be available in different lengths to accommodate most frame dimensions.