SURIEEN 42T Mountain Bike 170mm Square Crankset, Single Speed 104 BCD Crank Arm Set for bike, Road Folding MTB, BMX

【BCD】: 104mm(Outer Circle), 64mm(Inner Circle). 【Teeth】: 42T. 【Crank Arm Length】: 170mm, Crank related holes distance: 74mm. 【Feature】: Durable and light weight. Suitable for Mountain Bike, Road bike, Folding bike, MTB, BMX. 【What You Will Get】You will get a set of 170mm Square Crankset with 104 BCD 42T Chainring.