Shimano CUES FC-U6040-2 Crankset - 170mm 9/10-Speed 46/32t Asymmetric 110 BCD Hollowtech II Crankarms BLKShimano CUES FC U6040 2 Crankset 170mm 9 10 Speed 46 32t Asymmetric 110 BCD Hollowtech 2 Crankarms Black. Efficient and Stiff Front Double Crankset for Gravel Adventures. The Shimano CUES FC U6040 2 HOLLOWTECH II Crankset offers superior chain retention and a stiff yet lightweight design boosting confidence on long gravel rides. HOLLOWTECH II Hollow forged Crank limits weight while optimizing power transfer For frames with 68 70mm bottom bracket