Throw the ball far away
This item allows you to throw a ball way further for your pooch to chase. It may look a little bit redundant at first, but many people have problems with their shoulders, preventing them from throwing the ball far away. Even people who are entirely healthy might suffer some form of injury if they continuously strain their shoulders too much.
If you have an active dog who requires a lot of running, this is a neat thing. You will not strain your arm, and the dog will be happy and tired. Everybody wins here.