SHIMANO TOURNEY TX71 (DIRECT ATTACHMENT) 6-7 SPEED - Shimano TX71 6 / 7-speed rear derailleur (direct attachment). SIS rear index shifting. Smart cage can handle wide range gearing and 34 tooth sprockets while providing increased ground clearance. Mega-range 34 tooth sprocket compatible. Mega Pulley, 15 and 13 tooth pulleys offers long service life and less noise. Aluminium main link body for increased durability and rigidity. Wheel type cable guide provides super light shifting action.