ransform your doorway into a gym. Iron Gym Express is the multi-function exercise bar you can use to do pull-ups, chin-ups, push-ups, sit-ups, arm and shoulder exercises. The Iron Gym Express uses your body’s own resistance to deliver powerful results fast. It strengthens and tones you biceps, triceps, chest, back, shoulders and abs. This easy to use equipment instantly attaches to or removes from your door frame with no drilling or tools required.