Arm Strength Stick Power Twister Bar Spring Arm Strength Hand Gripper Power Twister Resista 20gk--60gknce Bend Bar For Fitness Chest Forearm Builder

Heavy 20kg 30kg 40KG 50KG 60kg sports fitness spring bar arm chest training bar. feature: Exercise your shoulders, arms and back muscles for a healthier and stronger body. feature: Brand new and high quality. Made of high quality steel wire and spring. Can be used anytime, anywhere, very convenient. A great gift for your partner or friend. Rubber handle for excellent grip. Ideal size for anytime, anywhere. Perfect for work on wrist, forearm, chest, arm and shoulder. Specification: Colour: Black. Material: spring steel+ABS+rubber. force strength spring length item weight. 20kg-54cm-0.65kg. 30kg-58cm-1.05kg. 40kg-60cm-1.15kg. 50kg-60cm-1.5kg. 60kg-61cm-1.55kg. 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 forwar