Description: 【Effortless Installation】: Easy step by step installation requires no tools and comes with a visual guide, making setup clear and easy for anyone 【Space Saving & Versatile】: Great for home garages, this Garage Parking Assistance Device maximizes parking space, supports multiple vehicles, and doubles as a versatile training tool for various scenarios 【Universal Fit & Adjustable Height】: Tennis Garage Parking Aid compatible with different vehicle types, the adjustable height feature ensures alignment with your windshield point for added convenience 【Enhanced Safety Guidance】: Garage Tennis Ball Parking Aid, highly visible markers help you park accurately , ideal for compact or dimly lit garages where avoiding collisions is essential for safe driving 【Package Includes】: Each set includes two tennis balls (6.3cm/2.48inch diameter), two screwdrivers, and two buckles to meet your parking assistance needs Specification: Material: plastic Size Chart: Ball Diameter 6.3cm/2.48inch Package Includes: 2 Balls 2 Screwdrivers 2 Buckles Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.