Feature: Will receive 2 sets of garage parking aids, each set includes 2 parking assist tennis balls, 2 plastic cord locks, and 2 screw hooks, providing a complete parking system to meet your daily home garage parking needs. Each ball is equipped with a 13-foot (4-meter) long string, allowing you to flexibly adjust the length through the buckle to find the perfect height for your vehicle, ensuring a proper stopping distance in your garage. Simply use the screw hooks to hang the string from your garage ceiling and adjust the cord lock to the desired height. Installation is quick and straightforward, ensuring you have the correct parking distance every time you use it. The tennis balls are soft and gentle on your car's windshield, preventing any scratches or dents. The bright color makes the balls easy to see, even in low light conditions, ensuring safe and accurate parking every time. These tennis ball parking aids are ideal parking assistants. These tennis balls can also be used as stress-relieving balls or as fun toys for your pets. Their versatile use makes them not just parking aids but also useful gadgets around the house, helping you target the perfect parking spot of your garage. Specification parameters: Material: PU/Polyurethane Color:As the picture show Size:6.5cm/2.36in Package include: 2Pcs Garage Ball 2Pcs adjustment buckle 2Pcs nails Note: one Please note that the photo does not show actual size, please refer to Description for size details. two Please allow differences due to manual measurement, thanks. three Due to the difference between different monitors, the image may not reflect the actual color of the item.