ZTTO T47 Series Thread Bottom Brackets. For T47 standard 68mm/73mm/86mm/92mm. -29 For 28.99mm DUB crankset. Such as NX DUB/X01 DUB/GX DUB etc. -30 For 30mm Crank. Such as SI BB30 crank / 3D+ BB30 crank etc.
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