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Road Bike Double Chainrings 50-34/52-36/52-42/53-39T Bicycle ChainWheels 104BCD

Road Bike Double Chainrings 50-34/52-36/52-42/53-39T Bicycle ChainWheels 104BCD

Process: One-piece forging, anode sandblasting. Weight:About 165g(50-34T) 167g(52-36T) 171g(53-39T).