Crankset Fiber Bike 165mm 170mm Bronzing Silver 7075+6061T Aluminum Alloy. Brand new and high quality. Made of high-quality materials, durable and practical. Features: Silky smooth appearance, delicate and glossy surface. Shaft diameter: 28.99mm (compatible with DUB). Effective shaft length: 101mm. Effective tooth pitch: 15mm. Using carbon fiber T1000, 7075+6061T aluminum alloy metal parts, passed the 360KG impact test and 100,000 fatigue tests. Installation interface: three-nail direct installation. Optional leg length: 165mm, 170mm, 175mm. Weight: 465 g (170 mm) without platters. Color: Symphony gold, bronzing silver optional. Package includes: Carbon fiber cranks on both sides, axles and screws. 1Crankset (including two cranks, crankshaft). Due to various factors such as monitor brightness, light brightness, etc. The actual color of the product may be slightly different from the picture displayed on the website. Please allow for slight manual measurement deviations in the data. Also, the each additional item means exactly the the same color and size.