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      Description

      Shimano EW-SD50 Di2 1200mm Etube Wire

      • Ultegra Di2 wires utilize Shimano's e-tube technology; e-tube is a two-prong system and is NOT cross compatible with Dura-Ace 7970 Di2 wiring
      • All e-tube wires may be used for internal or external applications
      • Frame grommets for E-tube internal-wiring compatible frames are sold separately, see Shimano Frame Grommet Kit Electronic Shifter Extra Parts