To allow that singular focus, we've engineered the DUB™ spindle to be the one true unifying component. One oversized spindle to work across every bottom bracket specification. For better crankarm compatibility. For better protection from the elements. For longer-lasting performance. To be stronger, smoother, simpler. Now, back to the ride.Key Features:One oversized spindle to work across every bottom bracket specification.Easy installationOutboard and inboard cup options to support your bike’s spec.Sealed cartridge bearings available in both stainless and ceramic versions Specifications:BB-frame interface T47 (Road and Road Wide) 68mmCrank-BB interface DUBBearing type StandardSpindle diameter DUBCup material Aluminum