Shimano Steps EP8 EW-SD300 Di2 eTube Wire – External Routing Electric Wire SD300 for External Routing More compact design makes new electric components smaller and lighter Will potentially expand the future capabilities of DI2 systems MODEL NO EW-SD300 SERIES EP8 EP800 Series Remarks Cable length:150-1600 mm Type For external routing Compatible system E-TUBE system Type For external routing Compatible system E-TUBE system Cord diameter Φ2.4 Plug diameter Φ3.45 SD300 connector (pcs) 2