Engineered with only superb quality materials, the aluminium/steel combo gives you the greatest balance of strength and reliability at a low weight. Plus, this lever set is compatible with Shimano 105 (5700) and Tiagra (4600) drivetrains. Key Features: Outer cable route design Anodized forged Aluminium brake lever; Resin Steel Shift Lever Shift & Go Technology implemented: Shift-Up Max. 3 gears Shimano 105 5700; Tiagra 4600 compatible More info