If we follow the instructions correctly we have to start by determining where to place the first eyelet with the car parked in the garage and then use.
Tennis ball garage door.
Ensure a perfect parking job every time.
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The garage stop ball is designed to contact your car windshield when parking in the garage so you can safely stop with plenty of room even in a small space.
This is a tennis ball on a string with some metal eyelets that allow us to attach the string to the garage door in such a way so that the ball slides down only when the garage door is open.
Thread the string through both eye hooks and attach it to the open garage door so the tennis ball is level with the front of the car when the garage door is open.
Punch or drill a hole through a tennis ball run a piece of string through the hole and tie a knot below the tennis ball.
It makes pulling to the right spot in the garage easy.
Hang the ball from a string over the front windshield.