DFX Powerball: IRON Forearm muscle builder hand strength Improved cognitive function

Improved cognitive function

Unlike traditional weights or resistance bands

Take your forearm strength training to the next level

Ideal for athletes

Benefits of Using the X Grip Pro Gyro

DFX Powerball: IRON Forearm muscle builder hand strength Improved cognitive functionGyroscopic Forearm Muscle Builder Powerball Iron Series Engineered for those who demand more from their training, the Powerball Iron Series delivers elite level grip strength, wrist endurance, and forearm development in a compact, precision crafted device. Ready for Serious Training Includes a sleek protective carrying case and a starter string for quick, effortless activationready to go right out of the box. Note: Not compatible with Gyroscope