Shimano SM-EW90-B Dura-Ace Di2 Junction A - 5-Port HSN-61034300 The screw set will help

The screw set will help you make sure you-ll be able to continue your tour with no loss of waterproof performance even if a few screws go missing

The outside has been optimised for shifting the chainring

and 100-25D Professional Micro Adjust Repair Stand Clamps

stands for high safety and a long-lasting connection

Bottom bracket shell : 68mm wide

Shimano SM-EW90-B Dura-Ace Di2 Junction A - 5-Port HSN-61034300 The screw set will helpSHIMANO Junction A E TUBE Under Stem Mount 5 Port SHIMANO's SM EW90 B 5 port Junction A mounts neatly to the bike stem and connects with E TUBE wires from DI2 shifters, accessory shifters, and the downtube junction wire. The SM EW90 junction box features an integrated battery level indicator, charging port, and gear index setup switch. Specifications MODEL NO SM EW90 B SERIES DURA ACE 9070 Series Average weight 13 g E tube connector (QTY) 0 E tube