The new SRAM DUB bottom bracket series has a simple job to connect your crankarms and protect the smooth, long-lasting application of power to your drivetrain. To allow that singular focus, sram have 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. Now, back to the ride.THINGS TO REMEMBER One oversized spindle to work across every bottom bracket standard. Significantly lighter than PFGXP system Easier installation by allowing you to press the bearing cups into the frameFEATURES AND BENEFITS Easy installation Two fully sealed cartridge bearings ISO 4210 compliant.SPECIFICATIONSBB-frame interface: Press Fit (MTB: 89/92mm)Crank-BB interface: DUBBearing type: StandardSpindle diameter: DUBCup material: Steel