... derailleur1.Index front derailleur,top pull2.Suitable for triple chainwheel,steel clamp3.Clamp diam:ø28.6mm,ø31.8mm4.Capacity:20T. Top ... kinds of bicycle pars,such as:frame,front fork,wheel,steel balls,chain,pedal,front brake,rear brake,brake lever,v-brake ... ,derailleur lever,handlebar,grip,saddle,pump,sidestand,bell,lock,chain covr. And MTB BICYCLE,folding bike,suspension bike,electric bike ...