Light and stiff direct mount chainring with accurate Quarq power measurement elegantly hidden inside the DUB spindleLonger DUB crank spindle accommodates both Road and MTB width frame bottom bracket standards for unmatched cross-compatibility across brandsProven Quarq reliability and accuracy with long battery life (400+ hours) thanks to a user replaceable AAA lithium batteryDUB-PWR spindle-based unit measures left side power to calculate total wattsCompatible with 135mm, 142mm and Boost rear spacingLightweight - less than 40g heavier than standard cranksetDUB bottom bracket adds durability and simplicity175x40DUB WideBLKDirect Mount1x12UPC/EAN/GTIN: 710845886713