Shimano Tiagra FC-4703 Cranksets Crankset with integrated 24mm axle decreases weight and improves rigidity. Aluminum construction with anodized finish. 45mm chain line, 110mm/74mm BCDs, 158.8 Q-factor. Item Specifications: Color, Gray, Spindle Interface Type, Shimano Hollowtech II, Pedal Spindle, 9/16", Chainring BCD, 110 Shimano Asymmetric, Chainring BCD, 74 Shimano Asymmetric, Rings, 50/39/30, BB Included, No, Crank Intended Use, Road, Defined Color, Gray, Crank Length (mm), 172.
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