Shimano SL-M310 Rapidfire Lever 7-Speed Shifter

Features

• 7-speed indexed shifting for crisp, precise gear changes
• Wide optical gear display makes it easy to see which gear you're in
• New ergonomic thumb lever shape makes shifting gears easy
• Smooth-shifting upgrade for mountain bikes or hybrid bikes
• Compatible with mountain triple rear derailleur/shifter
• Right shift lever only