carbon tri-spoke wheel 1.55mm clicher 2.Alloy braking surface 3.CE certificate(EN14781) 4.1 year warranty carbon tri-spoke wheel1.55mm clicher2.Alloy braking surface3.clincher or tubular(full carbon)4.CE certificate(EN14781)5.1 year warranty6.supply high-end carbon bike parts like frame,wheel,fork,handlebar ect, carbon tri-spoke