Lack of exercise, physical function will decline, which will cause physical discomfort, affecting work and study. This adjustable length door chin bar is perfect for doing fitness at home, such as pull-ups, pull-ups, lifting legs, sit-ups and sit-ups, you only need minimal space and can be conveniently arranged in the door frame Or on the corridor, making quick workouts easy.★Product detailsName: Horizontal bar on telescopic doorMaterial: Steel pipe, EVA foam, rubberColor: black + redThickness: 3mmMaximum load: 250 kgSize: Retractable, shortest length: 80cm, longest: 110cm.Advantages: no need to punch holes in the wall, easy to install, easy to carry.Versatile uses: Perfect for pull-ups, chin-ups, dips, push-ups, crunches and much more. Strengthen your arms, chest, back and abs for a more desirable body, improving your confidence and long-term health.Safety: The non-slip foam grip provides a firm grip and is equipped with non-slip washers to increase friction and prevent vibration.Uses: Can be conveniently arranged in the door frame (not for glass doors) or in the hallway to relax your body anytime, anywhere. Strengthen grip, upper body strength and shoulder strap strength.★ Assembly instructions :1. Adjust the length of the pull-up bar.2. Install the pull-up bar and rotate the bar to adsorb the door frame.Close the anti-loose locking catches.3. Test if the installation is stable enough then start your exercise.★ Important Safety and Usage Information: Install only in solid and stable door frames using the supplied door mounting kits (Do not install on hollow walls and glass door walls). Do not exceed recommendations for maximum installation heights or weight supported. Ensure bar is firmly tightened and stable before every use. Cautiously test it can support your weight before commencing any set of