SRAM DUB T47 Bottom Bracket - T47, 68mm, Road and Road Wide, 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. For Road and Road Wide Gutter Seal Technology drastically improves sealing against the elements Sealed cartridge bearings One oversized spindle to work across every bottom bracket