Specification: Material:metal Size:9*5.7*3.74cm/3.54*2.24*1.45in Including: 1/2*Car Wiper Booster Features: 1,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. 2,Suitable for all vehicles:Extend Wiper Blade Life,Prevent Wiper Lift, Allows windshield wipers to better clean mud, snow and slush, saves windshield washer fluid. 3,Easy Installation:Effortless setup ensures you spend less time on installation and more time enjoying added performance during rain and snow. 4,All-Weather Reliability:Perfect for various weather conditions, our springs ensure consistent pressure for optimal performance, rain or shine. 5,Upgrade Kit for Clear Views:Ideal for adding extra performance to your wiper system. Perfect for installing additional springs, ensuring a clear windshield for safe and enjoyable driving. Upgrade your wiper system now for a better driving experience.