FOR MORE THAN 14 YEARS WE'VE HELPED ATHLETES, TRAINERS, AND RSI SUFFERERS The design of NSD Power products is protected under more than 100 patents worldwide. And as Nano-Second Technologies continues to improve and evolve the original design, countless numbers of golfers, ball players, athletes of every kind benefited from the improved strength and control over their forearms and wrists. Eventually, as the growth of the personal computer increased our daily use of the mouse and keyboards, millions of suffers of repetitive stress injuries and Carpal Tunnel Syndromes found solace with a few minutes of exercise on an Original NSD Spinner. With DECADES of research and development, NSD Power is the only manufacturer of these gyroscopic exercise machines you should TRUST.