The Shimano Alivio FD-M3120 Front Derailleur features side swing action for enhanced cable routing and smooth operation. FEATURES: For 2x9 drivetrains Chainstay angle: 64-69 degrees Chainline: 48.8mm/51.8mm SPECS: Double or Triple: Double Front Der/Shifter Compatibility: Shimano Mountain Front Derailleur Style: Side Swing Max Ring (teeth): 36 Front Derailleur Cable Pull: Front Pull Front Derailleur Clamp: 31.8 (1-1/4") , 34.9 (1-3/8") , 28.6 (1-1/8") Drivetrain Speeds: 9