Brand: Shimano Shimano group ME: Acera Shimano group code: M3000 Shimano model code: FC-M3000 Model year: 2016 Crank length: 175 mm Teething: 40-30-22 Arms: 4-arm Chain wheels ME: Triple Gears ME: 9 Chain protector: With chain protector Color: Series Color BB axle-length: 113mm Bolt-circel diameter ME: 96/64mm