Shimano Sora FD-R3000 Front Derailleurs Long-arm front derailleur for reduced shifting effort Aluminum body with painted finish Chrome plated steel cage Product Specifics Drivetrain Speeds: 9 Double or Triple: Double Derailleur Capacity: 16 Front Der/Shifter Compatibility: Shimano Road Front Derailleur Cable Pull: Bottom Pull Front Derailleur Clamp: 28.6 (1-1/8") Front Derailleur Clamp: 31.8 (1-1/4") Front Derailleur Clamp: 34.9 (1-3/8") Front Derailleur Style: Traditional Max Ring (teeth): 52