Your serve as weapon. The Total Serve can help.
Total Serve is designed to help you to experience what proper serve technique FEELS like, smooth with no breaks in motion, and groove a swing that incorporates your hips, legs and shoulders.
Click the link above to see the tool in use.
The Total Serve is offered in the three sizes above, 3 ball for adults and bigger teens, 2 ball for juniors or petite adults and 1 ball for 10 and under.
Prices range from $39-59 USD.
Find a retailer or buy at TheTotalServe.