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The BBT-18 is a heavy duty, investment cast tool for installing and removing the following eight-notch bottom bracket cups:Shimano Octalink right cup with external notchesISIS DriveBBT-18 FeaturesThe BBT-18 has 8 notches with an outside diameter of nominal
The BBT-18 is a heavy duty, investment cast tool for installing and removing the following eight-notch bottom bracket cups:
The BBT-18 has 8 notches with an outside diameter of nominally 43.4mm. The inside-to-inside width is approximately 38mm. Each notch is approximately 3.9mm wide. The hole in the center of the casting is 22.5mm, and will not fit over the 30mm spindles.
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