50% OFF XUNDD Power Twister Bar Spring Arm Strength Hand Gripper Fitness Gym Equipment 20-60KG

1.All products are in stock in Manila！We will arrange delivery as soon as possible after placing the order. 2.We are an honest seller. If there is any problem with the product, please contact us as soon as possible, we will try our best to solve your problem! ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Materials: High Quality Carbon Steel Springs and Non-Slip Plastic Handle. Strengthens the chest, back, shoulders, biceps and grip Perfect for building upper body strength. Suitable for people: young, adult, beginners "material": Stainless steel Spring "arm": 20KG 30 40 50 arm function: Exercise shoulder, arm and back muscles to make the body healthier and stronger Method: 1.Bend both arms and bend the spring hard behind the neck 2.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.