Specification: Material: metal Size: 9 * 5.7 * 3.74 cm / 3.54 * 2.24 * 1.45 inch Including: 1/2 * Car Windshield Wiper Booster Features: 1, Improve Windshield Wiper Performance: Adds pressure, keeps the windshield wiper tightly against the windshield and eliminates windshield wiper vibration. Increase your car's visibility. Specially designed for improved contact with the windshield wiper blade. 2, Suitable for all vehicles: Extend the life of the windshield wiper blade, prevent the windshield wiper from lifting, allow the windshield wipers to better clean mud, snow and slush, save windshield washer fluid. 3, Easy Installation: Easy installation ensures that you spend less time on installation and more time enjoying increased performance in rain and snow. 4, All-Weather Reliability: Perfect for a variety of weather conditions, our springs ensure constant pressure for optimal performance, whether it's rain or shine. 5, Clear View Upgrade Kit: Perfect for adding extra performance to your windshield wiper system. Perfect for installing additional springs, ensuring a clear windshield for a safe and enjoyable drive. Upgrade your windshield wiper system now for a better driving experience.