SRAM DUB Wide T47 Bottom Bracket - T47 85.5mm Road BlackThe SRAM DUB bottom bracket series has a simple job to connect crankarms and protect the smooth long lasting application of power to the drivetrain. SRAM engineered the oversized DUB spindle to work across every bottom bracket standard simplifying crankarm compatibility. Designed for use with SRAM Wide Cranksets Gutter Seal Technology drastically improves sealing against the elements Sealed cartridge bearings One oversized spindle to work across every