DUB, left, carbon crank arm with foam core, black Q-factor 174 mm, Wide axle (chainline 55 mm), Bluetooth and ANT+ transmitter technology, +/- 3% accuracy, waterproof according to IPX7 standard, lithium AAA battery. Number of chainrings none Crank length 175.00 mm Main color black System compatibility 12-speed Bottom bracket DUB Type/kind Article Variation left Sram Article number: 733445 EAN code: 710845886287 Supplier number: 00.3018.343.002 Retail packaging: Yes