The Bike Shop - Shimano- Crank M171, w/ CG, w/o Bolt Model No. FC-M171 Rear Speeds 8/7/6 Chaining Combination 42-34-24T Spider or Gear Arm 4 Arm PCD (mm) Riveted Crank Arm Length (
Amazon.com: Customer reviews: Shimano Tourney Fc-M171 Crankset, 175x48-38-28, Black