Shimano E-Tube Di2 External Junction B Box Color:Black the Park Tool P-Handled Hex

the Park Tool P-Handled Hex Wrench delivers precision

Features: High Pressure Pump

Bring your worn out Sidi shoes back to life with new Sidi SRS Soles for Newer Spider Carbon shoes

SRAM's 1170 11-Speed Cassette is constructed of light

30mm spindle for Easton Cinch cranks

Shimano E-Tube Di2 External Junction B Box Color:Black the Park Tool P-Handled HexShimano 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