It is not easy to be deformed when pedaling hard, and it has better rigidity and force transmission effect. Material: aluminum alloy body + chromium phase steel shaft. Bottom shaft: 24mm screw-in bottom shaft Length of shaft center: 115mm. Crank + bottom bracket + sprockets.
Also, the each additional item means. The the same color and size. Transit time may be a little delayed because of the. If you have any questions.