Features Model: Square hole Shimano crankset FC-TY301 crank arm length is 170mm, gear combination is 42-34-24T, SHIMANO TOURNEY TY-MTB Crankset-170mm for 3x8/7/6-speed. Light and reliable shifting; Precision indexed shifting DUAL SIS-Versatile performance; Wide compatibility with multiple components; Quick and precise assembly. Material: The crank is made of aluminum alloy, which increases the rigidity of the crank and reduces the weight, so the biting force between the crank and the bottom bracket is more even. Application: Compatible with 3x8, 3x7, and...