The SRAM DUB bottom bracket series has a simple job-connect your crankarms and protect the smooth, long-lasting application of power to your drivetrain. To allow that singular focus, SRAM has engineered the DUB spindle to be the one true unifying component. One oversized spindle to work across every bottom bracket standard. This design provides greater bearing durability, easy installation, and press-fit cups for a lighter weight. The SRAM DUB bottom bracket is suitable for PF30 (68 or 73mm or BBRight) frame interfaces and features a DUB spindle diameter. It's designed for unisex riders and is available in various sizes.