Crank:165mm aluminium Chainwheel:28T*38T*48T (Index-shift) We can supply all kinds of bicycle parts,such as bicycle derailleur,shifter lever,twist shifter,brake lever,brake set,hub,freewheel,tyre/tube,chainwheel,rim,pedal,saddel,grip,and so on.We always are trusted by all of our clients with high quality goods,best price and excellent service.If you are interested in them,you can contact with me ...