Shimano E-Tube Di2 External Junction B Box Color:Black Includes the 530-2 adaptors for

Includes the 530-2 adaptors for aligning 1" and 1-1/8" pressed headsets

Simply insert the specially sized jaws into the masterlink

The clamp rotates 360 degrees to get any bike in the perfect position for any repair

Equal to the sizing of the Mavic® 108 471 01 wrench

Features: High Pressure Pump

Shimano E-Tube Di2 External Junction B Box Color:Black Includes the 530-2 adaptors forShimano E Tube Di2 External Junction B Box The Shimano Di2 SM JC40 is designed to connect SD50 E tube wires along four points; front derailleur, rear derailleur, cockpit junction and battery mount. The B Box is used to split the main wire from Junction A to the front and rear derailleurs. It can also be used to connect a seatpost mounted battery to the system. Specifically designed for externally mounted systems and mounts underneath bottom bracket