DFX Powerball EDGE Edition Resistance Trainer Description - The DFX Powerball EDGE combines innovative design with powerful gyroscopic resistance, delivering up to 45 lbs at 10,300 RPM to precisely target the hands, wrists, and forearms - making it ideal for athletes, professionals, and those focused on recovery. Its self-lit, color-changing LEDs provide real-time visual feedback, encouraging you to push harder as the colors shift with your increasing speed. Harnessing gyroscopic principles, it