Sunrace M21 Twist Shifter The Sunrace M21 twist shifter works seamlessly with Sunrace derailleurs to provide smooth, accurate shifts for your 6, 7, or 8 speed bicycle. A transparent gear indicator lets you know exactly what gear you're in with a glance. The long TPR Grip and light action shifting provides comfortable shifts that is perfect for your urban cruiser, comfort, or sport bike. Features Cable Adjuster Light Action Shift - Both Directions TPR Grip Galvanized Cable | Sunrace M21 Twist Shifter Rear, Right Hand, 8 Speed