high carbon with alloy frame bicycle Cassette freewheel for Road Bike 11-50T ,High tension steel plate nickel-chromium plating, hollow design, reduce weight, the best choice for mid-price, ultra-light design concept, ultra-wear-resistant imported steel, super cool appearance. Mountain bike modification
Teeth:11-50T:11-13-15-17-19-21-24-28-32-36-42-50T
weight:590g
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