【Size】: 48T, 170mm crank, , 1x, Outer Diameter: 210 mm
【Material】: Steel alloy bicycle square crank, strong, convenient and cheap. Here's an easy and quick alternative to bike repairs.
【Design】: Black ABS plastic protective case. Versatile color design, and prevent the chain from falling off.
【Compatibility】: Often used in urban folding bicycles, fixed gear bicycles and other single speed vehicles. Compatible chain size 1/2"*1/8", pedal mounting size 9/16 ".
【Easy to install】: Included in the package is a fixed right crank sprocket and a separate left crank. It can meet daily commuting use and is very suitable for you who only need simple replacement and maintenance.
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