Power Twister Spring Bar For Exercise Grip Bar Power Twister Flexible Strength Chest Arm Rod Exerciser Hand Gripper Spring Bar Muscle Home Fitness Upper Body Muscle Workout Chest Builder

aterials: High Quality Carbon Steel Springs and Non-Slip Plastic Handle.Strengthens the chest, back, shoulders, biceps and gripPerfect for building upper body strength.Suitable for people: young, adult, beginners"material": Stainless steel Spring"arm": 20KG 30KG 40KG 50KG 60KG arm function: Exercise shoulder, arm and back muscles to make the body healthier and strongerMethod: 1.end both arms and bend the spring hard behind the neck2.Two arms forward, bend the spring upward, and then relax.3.The arms converge toward the chest, bend the springs, then straighten out and relax slowly.4.Stand, two feet 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.5.Two arms to the behind, clench the spring, and then straighten down gradually bend.Precautions: 1. Please check the strength of the arms arm device before use, there is no loosening phenomenon.2. Select the arm that suits your fitness level so as not to strain your muscles.3. When using, place the arm on the handle safely on the wrist.4. When using, you should choose a relatively spacious site exercise, so as not to hurt people. ​NOTE：For your safety, the strap must be wrapped around the wrist. ​