1 Pair Electric Bike Crank Arm170mm Crank Arm for ExerciseFoldingHybrid BicycleMountainRoad Bike

Description:Practical features: Crank arms help ensure ultimate chain retention extend life and reduce friction and noise.Sturdy material: The crank arm set is made of aluminum alloy which is stable in structure durable and long-term use.Easy to use: Bicycle cranks arms have L and R distinctions which are easy to install and distinguish very convenient.Good compatibility: Bicycle cranks are suitable for common spinning bikes with mid-mounted motors or other similar vehicles.Distinguish installation: The shape of the left and right cranks is the same and the threads for installing the pedals are positive and negative threads.Specification:Material: Aluminum Alloy.Size: Length: approx. 21 cm/8.27 inch.Hole spacing: approx. 17 cm/6.69 inch.Package Includes:1 Pair Left Right Crank Arm.