Windshield Wiper Arm Pressure Spring BoosterProvides extra power to all wipers to sweep away rain, snow and dirt for a clearer and safer view. Enhance Wiper Performance Adds Pressure, Keeps Wiper Tightly on the Windshield and Eliminates Wiper Vibrations. Elevate your vehicle's visibility. Specifically designed for improved wiper blade contact. Suitable for all vehicles Extend Wiper Blade Life,Prevent Wiper Lift, Allows windshield wipers to better clean mud, snow and slush, saves windshield