Power Twister Bar Hand Strengtheners Fitness Expander Hand Gripper Arm Trainer Spring Bar Resistance Exercise 20/30/40/50kg

Weight class: 20/30/40/50 kgMade of high-quality, durable materials, easy to use and maintain.You can use it anywhere, anytime, very convenient.Ideal for building upper body strength.Suitable for use on the wrists, forearms, chest, forearms, and shoulders.[Instructions]1. Stand with your feet shoulder-width apart, bend your elbows crosswise, and bend the spring with your left hand. Then bend your left elbow and bend the spring with your right hand.2. Extend your arms, bend the spring, and slowly relax. Repeat several times.3. Bend your arms forward and slowly relax the spring.4. Bend down and bend your arms toward the spring.5. With both hands behind you, grasp the spring firmly, straighten it, and slowly bend the spring.6. Confirm the exercise. The bodybuilding results are remarkable.[Note]1. Before use, check that the arm control parts are stable and not loose.2. Please choose an arm strengthener that suits your fitness level to avoid muscle strain.3. When using, fasten the seat belt to the handles on the armrests at the wrists.4. When using, choose a relatively spacious sports field to avoid hand injury.