2nd generation E-TUBE cable for use with some Di2 systemsInternal routing versionE-tube STEPS EP8 uses a fully removable individual cable system enabling fine tuning with the correct cable length to each component for easy and tidy fitmentEW-SD300 wires use a slim 3.45 mm diameter plug, they can be connected to EW-SD50 wires with the use of EW-AD305 adapterEW-SD300 individual wires are available in varying lengths, there is no need (or facility) to cut these cablesReliable and secure water resistant connectors