Review on Introducing the Game-Changing Eye Coach by Billie Jean King: Revolutionizing the Industry by Veeravelu Tang

The idea behind this device is perfect. However, the mechanical design of the crucial parts leaves a lot to be desired. First, an expensive bullet has a continuous sleeve that rotates on a shaft. No bearings, just a dry bushing on a dry shaft. I added some Phil Woods bike lube and it helped, but not much. The second problem with spin is not holding the ball to the side so it slides side to side into the two "Y" arms. Even after oiling it, I can make it spin two or three turns just by clapping my hands. Another mechanical issue is the flex arm. It moves as if someone had taken a garden hose, filled it with thick jelly, and then stuck an old feather in it. He is chaotic and unstable. Still, the frame and weight are premium, but it doesn't even come close to $200. At $49.99 this is worth considering.