This is a Red & Black portable pull-up tool, it can be easily stored in your home or office, and is convenient to carry when traveling. The correct and effective exercise method will bring you a good exercise effect. Pull Up Bar is a must-have item in your fitness tool collection. Pull up bar exercise is considered as one of the most effective ways to target the muscles in your backs, shoulder, chest, arms, triceps, biceps, and legs. ? Installation steps : 1) Adjust the length of the pull-up bar. 2) Install the pull-up bar and rotate the bar to adsorb the door frame. 3) Insert the safety lock on both sides. 4) Test if the installation is stable enough then start your exercise. ? Six upgrade advantages: 1. Multiple non-slip design?2. Bold thicker steel pipe design; 3. High load capacity?4. Double-layer non-slip foam design; 5. Installation balance tester; 6. No punching, easy to install. ? Safety Precautions 1. Glass doors and hollow door frames are forbidden to be installed. Be sure to install them in a solid and stable frame structure. 2. Before exercising, check to make sure the pole is securely fastened. 3. It is strictly forbidden to stand upside down, upside down, flip and so on.