7700 model (109.5mm spindle length) designed for double chainrings
109.5mm bottom brackets are serviceable and allow for bearing tension adjustments
OL5: Shimano Octalink 5mm deep 8-spline spindle taper
M36 x 24tpi (Italian threads)
175g
Italian Shell With 70mm x Spindle Length 109.5mm
Original Shimano parts guarantee that all components work perfectly for optimum performance and maximum safety and longevity.