Crank Arm Bike Crankset Single Speed with Bottom Bracket Repair Parts 130BCD
1 Pair Crank Set, 1 Piece BB Bottom Bracket. 1 Pair Crank Set, 1 Piece BB Bottom Bracket, 1 Piece Chainring. 1 Pair Crank Set. Hollow design, which is lightweight, adding no heaviness to you bike, make riding more comfortable and relaxing.