Altus FD-M2000 Front DerailleurItem Specifications: Double or Triple: Triple, Drivetrain Speeds: 9, Derailleur Capacity: 18, 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 Cable Pull: Dual, Front Der/Shifter Compatibility: Mountain, Max Ring (teeth): 40, Front Derailleur Style: Traditional,