microSHIFT R9 front derailleurs are precision manufactured to deliver predictable and smooth shifting. Optimized for use with 9-speed compatible road drivetrains. Designed for use with 30/39/50t chainrings. 34.9mm band clamp with included 31.8mm adapter. Anodized black finish provides additional protection. 63-66° Chainstay angle. Optimized for 45mm chain line. Durable cold forged aluminum body provides strength and weight savings. Precision forged steel shifting plate for resistance to chain-rub. Stiff and strong hardware for reliable mounting. Item Specifications: Double or Triple: Triple, Drivetrain Speeds: 9, Front Derailleur Clamp: 34.9 (1-3/8"), Front Derailleur Clamp: 31.8 (1-1/4"), Front Derailleur Cable Pull: Bottom Pull, Front Der/Shifter Compatibility: Road, Max Ring (teeth): 50, Front Derailleur Style: Traditional, Weight: 140, Derailleur Capacity: 20,