Transform your doorway into a gym-Chin-Up Gym is the multi-function exercise bar you can use to do pull-ups, chin-ups, push-ups, sit-ups, dips, arm and shoulder exercises-every exercise you need to build a powerful upper body. the Chin-Up Gym uses your body's own resistance to deliver powerful results fast, It strengthens and tones your biceps, triceps, chest, back, shoulders and abs. It instantly attaches to or removes from your door frame with no drilling or tools required, and the heavy duty steel construction supports up to 300 LBS. Now it's easy to get the strong, lean body you always wanted, right at home.