The Perfect Multi-Gym Pro helps you achieve the "V-Cut" look - broad shoulders and a narrow waist. Use your own body weight to build and strengthen your muscles with a total upper body workout that includes 3 kinds of pull-ups (including wide angled grip), chin-ups, pushes, sit-ups and dips. Adjustable height helps ensure a secure fit on door frame (fits door frames 27" - 35" wide). Easy to install with no drilling required.