E-tube Two-prong system is NOT cross compatible w/ Dura-Ace 7970 Di2 wiring
-For use with Dura-Ace 9070, Ultegra 6770 & Alfine Di2 components
-All e-tube wires may be used for internal or external applications
-This is a Shimano Ultegra Di2 EW-SD50 Extension Wire for all Di2 systems except Shimano 7970 Dura Ace.
-Available for Pickup within 2 to 1 businesses days