Arm Gyro Ball Core Trainer Arm Exercise Torque Ball with Handle Forearm Strengthener for Stronger Arm Bones and Muscle with LED Light

【UPGRADE】On the gyro ball, increase the size and add tow handles, With the arm ball, you can build high-intensity upper-body muscles, fat-burning, and core-training exercises in minutes.
【EASY TO START】A starter cord is designed on the handle of the arm exercise gyro ball, you only need to hold the handle and pull it several times in a row,the internal LED lights up to provide power for a quick start.
【POWERFUL】The arm gyroscope ball innovation adopts the principle of centrifugal kinetic energy, the use of metal ball core in the track homeopathic rotation of centrifugal force.Powered by a high speed 2-axis gyroscopic rotor,this lightweight exercise breakthrough produces up to 200 lbs.of isometric resistance and will automatically adjust to your personal workout level.