Shimano Short Battery Mount External/Internal Wiring Brand_WTB 5" and the holes are

5" and the holes are 3" center to center

Designed expressly to disperse heat and reduce noise generated by home trainer use

}Wheels Manufacturing Bottom Bracket Gauge

0 Length 272 Spoke Interface J-Bend Defined Color Silver

}Halo Sport Hat: White One Size

Shimano Short Battery Mount External/Internal Wiring Brand_WTB 5" and the holes areShimano Short Battery Mount External Internal Wiring. Shimano Di2 External Battery MountsAll Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions Use Di2 system checker to update component firmware from http: e tubeproject. shimano. com