2-speed, DUB, without bottom bracket, 12-speed compatible, hollow carbon crank arms, direct mount aluminum chainring, 45mm chainline, Bluetooth and ANT+ wireless technology, LED indicator for operational readiness, reset and low battery, Accuracy: +/- 1.5%, dual-sided measurement, tool-free battery replacement (CR2032) Number of chainrings 2 Type Item Main color black Large chainring 46 T. Small chainring 33 T. Chainline 45.0 mm Crank length 165.00 mm Secondary color grey System compatibility 12-speed Bottom bracket DUB Variation Crankset SRAM continues to innovate, the lightest and stiffest crank from SRAM is now even lighter thanks to an optimized hollow carbon crank. The fully integrated power meter is the ultimate tool to take performance to the next level. Professionals can no longer do without it. It is the lightest, stiffest and most accurate (max +/-1.5% deviation) power meter ever.Crankset manufactured from a single pieceX-Range technology for more range and smoother running29 grams lighter than the previous versionFully integrated power meterPower measurements are accurate within +/- 1.5% and are not affected by weather conditionsDUB bottom bracketSram Article number: 735234 EAN code: 710845899355 Supplier number: 00.6118.688.013 Retail packaging: Yes