Package content: you will receive 4 pieces of retractable balls with ropes, 4 pieces of adjustable clips and 4 pieces of hooks, practical garage parking instructions for various vehicles, enough for your use Adjustable length: the rope is approx. 13 feet long and is equipped with adjustable buckles, suitable for different types of cars, the diameter of the ball is approx. 2.5 inches, the color is eye-catching and easy to see Easy to install: use a hook to hang the rope on the cabin, and use a clip to adjust the rope to the desired height; After installation, ensure that there is a proper parking distance in the garage and remove the car from the garage Safe material: the tennis ball is made of rubber and felt, soft and will not scratch the glass or stain the car, it parks nicely and helps you determine the parking distance Practical parking indicator: conveniently and quickly assist you to park easily, bid farewell to parking troubles and protect your car