Material: Crafted from premium aluminum alloy, this crank arm is lightweight yet strong, offering high axial strength and excellent compatibility. Its design ensures long-lasting performance Craftsmanship: Featuring a finely polished finish and attractive paintwork, this crank arm not only performs reliably but also enhances the aesthetic appeal of your bicycle with its stylish appearance Easy Installation: Designed for convenience, this lightweight and compact crank arm is simple to install and use, making it an ideal choice for both novice and experienced cyclists Versatile Application: Suitable for a variety of bicycles including road bikes, mountain bikes, folding bikes, and fixed gear bicycles, this left-side crank arm offers broad compatibility across different bike types Product Specifications: Made from aluminum alloy with a total length of 207mm by 28mm and a center distance of 170mm Specification: Material: Aluminum alloy, Size Chart: total length: 20.7cmx2.8cm/8.15inchx1.10inch center distance: 17cm/6.69inch Package Includes: 1X Bike Crank Arm Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.