Shimano Tiagra FD-4700 Front DerailleursCompatible only with ST-4700 or ST-RS405 shiftersAluminum links and clamp band to save weight and increase rigidityExtra wide pivot link increases rigidity while reducing flex for improved shifting responsePlated steel chain cage43.5mm chain line52t maximum outer ring and 16t capacitySee Tech link below for compatibility infoItem SpecificationsDrivetrain Speeds10Double or TripleDoubleDerailleur Capacity16Front Der/Shifter CompatibilityShimano RoadFront Derailleur Cable PullBottom PullFront Derailleur Clamp28.6 (1-1/8")Front Derailleur Clamp31.8 (1-1/4")Front Derailleur StyleTraditionalMax Ring (teeth)52