Product Feature:
Prcess:Plating anode 
BCD:130mm  
Material :aluminum alloy 7075  
Specifications:54T/56T  
Weight:  54T:160g/pcs 
               56T:162g/pcs
Color:Rainbow ,Rose gold , black
Option description:
Single Chainring: there is only one chainring in the package
If you have any questions, Please feel free to contact us.