Product Description The Rival DUB crankset by SRAM for 2x12-speed drivetrains allows for left-sided power measurement thanks to the power meter inconspicuously integrated into the axle. Information regarding the return of batteries and electrical equipment:Information on the return and disposal of used batteries and electrical equipment can be found here. Specifications:Application:RoadType:crankset with power meter (left)Compatibility:2x12-speedChainring Mount:107 mm pitch circle, 4-arm asymmetricalTechnical Information:Series:RivalCrank Arm Material:AluminiumChainring Material:AluminiumGradation:33-46, 35-48Crank Arm Length:165.0 mm, 170.0 mm, 172.5 mm, 175.0 mmChainline:45.0 mmAxle Diameter:28.99 mmRecommended Bottom Bracket:all SRAM Road DUBTolerance:+/- 3%Point of Measurement:crank axlePower Source:AAA micro batteryBattery Life:400+ hData Collected:power (left side), cadence, torqueWaterproof:IPX7Data Transfer:ANT+, BluetoothCompatibility:142 mm standard widthFeatures:DUB-PWR Axis unit measures left-sided power to determine total wattageelegant integrated designproven reliability and accuracy with QUARQ technologyDUB bottom bracket system for durability and simplicityenergy display (total power), calibration, battery status display via applong battery life covers an entire seasonuser-replaceable batteryIPX7 waterproof up to 1 meter for 30 minuteslight: only 40 g heavier than standard cranksetManufacturer Numbers:165.0 mm 33-46:00.3018.294.004165.0 mm 35-48:00.3018.294.000170.0 mm 33-46:00.3018.294.005170.0 mm 35-48:00.3018.294.001172.5 mm 33-46:00.3018.294.006172.5 mm 35-48:00.3018.294.002175.0 mm 33-46:00.3018.294.007175.0 mm 35-48:00.3018.294.003Contents:1 x SRAM Rival DUB Crankset with power meter axle2 x SRAM chainring1 x AAA battery Manufacturer: SRAM LLC 1000 W. Fulton Market 4th Floor Chicago IL 60607 USA info@sram.com Distributor: SRAM Europe Sales and Services B.V. Paasbosweg 16 3862 ZS Nijkerk Netherlands info@sram.com