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1.Single chainring design of wide and narrow teeth to prevent chain drop
2. The five claws are made of high-strength aluminum and have a new hollow structure to reduce the weight of the crank.
3. The crank is made of high-strength aluminum alloy, which will not break and improves safety performance.
2. The five claws are made of high-strength aluminum and have a new hollow structure to reduce the weight of the crank.
3. The crank is made of high-strength aluminum alloy, which will not break and improves safety performance.