Scram: SINGULAR FOCUS. BETTER SOLUTION. The new SRAM DUB bottom bracket series has a simple job connect your crank arms and protect the smooth, long-lasting application of power to your drivetrain. To allow that singular focus, wave engineered the DUB spindle to be the one true unifying component. One oversized spindle to work across every bottom bracket standard. For better crank arm 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 frame FEATURES AND BENEFITS Easy installation Two fully sealed cartridge bearings ISO 4210 compliant. SPECIFICATIONSBB-frame interface: Press Fit (MTB: 89/92mm)Crank-BB interface: DUB Bearing type: Standard Spindle diameter: DUB Spindle length: n/a Chain line: n/a Support E-type FD: n/a Cup material: Steel