Spring Arm Strength Hand Gripper Power Twister Resistance Bend Bar for Fitness Chest Forearm Strength Training Spring Arm Strength Hand Gripper Power Twister Resistance Bend Bar for Fitness Chest Forearm Strength Training Gym Equi 20/30/40/50kg /60kg

Materials: Steel spring + ABS + Rubber 【Instructions】 1. Stand with your legs apart, bend your right elbow, bend the spring with your left hand, then bend your left elbow, and bend the spring with your right hand; 2. Straighten both arms upwards, bend the spring, and then gradually relax, repeat several times. 3. The arms are bent forward and the spring is gradually relaxed 4. Bend the body downward and the arms bend the springs. 5. With both arms behind you, hold the spring tightly and then straighten it down and gradually bend the spring. 6. Insist on exercising, the effect of bodybuilding is remarkable. 【Notes】 1. Please check whether the various parts of the arm strength device are stable and not loose before use. 2. Please choose an arm strength machine that suits your physical fitness level to avoid muscle strain. 3. When using, put the safety belt on the armrest handle on the wrist.