Pedal size: 9/16 chain size.
Crank arm length: 170 mm, made of high-quality aluminium alloy, durable and lightweight. Suitable for mountain bike, road bike, folding bike, MTB, BMX.
Teeth: 42 x 170 mm, universal fit for single speed and 6/7/8/9/10/11 speed bike, MTB, mountain bike
Professional design: narrow wide chaining could prevent the chain from falling off the chainring, it is the most advanced tooth profile on the market and makes your cycling safer
This crank and chainring are only suitable for single speed. Cannot be used at other speed.