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From the manufacturer's official website:
Hollowtech II Bottom Bracket
Specifications:
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Applicable
Front Chainwheel
FC-5600/5603
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Hollow Pipe
Yes
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Spindle Crank Arm Mounts
Yes
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Axle Length
HollowteckII
68mm(BC1.37)
70mm(M36)
For more information, please visit this product's webpage.
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