The SRAM DUB Threaded Bottom Bracket has a simple job—connect your crankarms and protect the smooth, long-lasting application of power to your drivetrain. To allow that singular focus, SRAM engineered the DUB™ spindle to be the one true unifying component. One oversized spindle to work across every bottom bracket standard. For better crankarm compatibility. For better protection from the elements. For longer-lasting performance. To be stronger, smoother, simpler.SRAM DUB Threaded Bottom Bracket FeaturesOne oversized spindle to work across every bottom bracket standardGutter Seal Technology™ drastically improves sealing against the elementsSignificantly lighter than GXP® systemGutter Seal Technology™Sealed cartridge bearingsISO 4210 compliant.SRAM DUB Threaded Bottom Bracket SpecificationsBB-frame interface: English/BSA 68/73mmCrank-BB interface: DUBBearing Type: StandardSpindle diameter: DUBCup material: Aluminium