[Function]: It serves to protect the cyclist from being soiled or trapped in the chain rings and tends to fully enclose the drive train
[Fitment]: The bike chain guard is only for Shimanos M430, M590, M390, suitable for the largest 44-toothed crankset
[Material]: Made of high quality plastic, lightweight with simple and classic design; Comes with screws and gaskets, easy to install
[Dimensions]: Diagonal Pitch: Approx. 15.5cm/6.1inch; Adjacent Pitch: Approx. 11cm/4.3inch; Please pay attention to the riders, make sure if the dimensions of your crank set is applicable to this cover
[100% Satisfaction]: If you have any question about this item, please feel to contact us, we will help you within 24 hours on week days