The Universal Training Bar allows any room to be turned into a gym! It can be attached to most door frames to perform multi-position Pull Ups, Chin Ups & suspended crunches. Placed at the bottom of the door frame the Universal Training Bar acts as a sit-up bar and when placed on the floor it becomes a multi-position push-up bar making the Universal Training bar a perfect training companion. Warning - This product should only be used in doorways in solid walls, which have sturdy door frames. Suits door frame opening between 70cm and 78cm with door frame depths between 11cm and 16cm only. NOT FOR USE in door frames that do not meet this cri "