155-175mm Mountain Bike Kid's Bicycle Crankset with Chainring 30/32/34/36/38T

Number of teeth: 0mm/3mm/6mm-30/32/34/36/38T. Crank length:155/160/165/170/175mm. Suitable for: mountain bike. Weight:About 558g(160mm) 621g(170mm). Material: Aluminum Alloy.

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