R10 front derailleurs work with 10-speed -compatible road shifters. Designed to work with a variety of chainring combinations, these workhorse components will get you rolling again. Chainstay angle: 61-66°. Chain line: 45mm. Compatible with the 105 5700 / Tiagra 4600 10-speed road systems. Cold-forged aluminum body. Precision forged steel shifting plate. Item Specifications: Double or Triple: Triple, Drivetrain Speeds: 10, Weight: 119, Derailleur Capacity: 20, Front Derailleur Clamp: Braze-on, Front Derailleur Cable Pull: Bottom Pull, Front Der/Shifter Compatibility: Road, Max Ring (teeth): 50, Front Derailleur Style: Traditional,