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1. The integrated structure of the tooth cover effectively protects the trouser legs, prevents the skirt from being caught in the chainring, and effectively prevents the chain from falling off.
2. The crank is forged from high-strength aluminum alloy, with widened and thickened edges and corners, which is easy to bear force and does not break.
2. The crank is forged from high-strength aluminum alloy, with widened and thickened edges and corners, which is easy to bear force and does not break.