The fitness mad universal training bar is a multifunctional and very effective training tool it is perfect for doing multi position pull ups chin ups and suspended crunches when put at the bottom of the door frame the universal training bar serves as a sit up bar and when placed on the floor it becomes a multi position push up bar it can be attached to most doorframes with openings between 70cm 275 and 78cm 30cm and depths between 11cm 43 and 16cm 62