Shimano SL-RV400 Grip Shifters Description: The Shimano SL-RV400 grip shifters are a grip shifter set for a 3x7 Shimano Tourney drivetrain. It uses a steel shift cable and RevoShift technology for crisp shifting every time. You'll also find an optical gear display so you can tell, at a glance, which gear you're in at all times. Features: RevoShift technology Optical gear display Specifications: Shifter Style: Grip (Twist) Speed: 3 x 7 Speed Derailleur Compatibility: Shimano Road & Mountain (6, 7, 8, 9 Speed) Shift Mechanism: Cable Actuated Color: Black Weight: -