Arm Length: 152mm 165mm. 1 Pair Crank Set. 1 Pair Crank Set, 1 Piece BB Bottom Bracket. 1 Pair Crank Set, 1 Piece BB Bottom Bracket, 1 Piece Chainring. Chainwheel Tooth: 44T. Hollow design, which is lightweight, adding no heaviness to you bike, make riding more comfortable and relaxing.
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