This tool will help you develop your proper tennis serve motion, timing and power. It really works wonders.
This is what it supposed to do and this design replaces the socks that are shown on the video, see this guy's explanation how to use it https://www.youtube.com/watch?v=oVh7tsa2R6I
The grip size of this design is 4 3/8 or G3.
| tennis_serve_trainer_handle_2.stl | 215.9KB |
