The 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.Features-Gutter Seal Technology drastically improves sealing against the elements-Sealed cartridge bearings-One oversized spindle to work across every bottom bracket standard-Significantly lighter than GXP systemItem Specifications-BB Shell Width (mm):83mm-BB/Frame Interface:English-Bottom Bracket Shell I.D.:1.37-Defined Color:Black-Spindle Interface Type:SRAM DUB