Shimano octalink bottom bracket removal. Notify me of followup comments via e-mail. Be sure to double check thread direction when in doubt. Frames with either Italian or English bottom bracket shell diameters independent of threading may be fitted with Thompson bottom brackets. Use care to hold either tool firmly in place. This is an attempt to address several issues associated with weight and stiffness. I'm assuming it needs to be British Council Film Collection. Make sure you replace your bottom bracket with a like-for-like. What should I buy with it?