From the Shimano CUES series was designed for reliable performance and a harmonious pedaling feel in road bike as well as gravel use. The two-piece construction improves stiffness without unnecessarily increasing the weight. The result benefits not only efficient power transmission, but also riding enjoyment.Shimano, CUES FC-U6030-1, Crankset, Speed: 9/10/11, Spindle: 24mm, BCD: 110, Hollowtech II, Black, Road Disc