The Maximiza Pull-Up Bar is a perfect addition to any home gym workout for upper-body strength and muscle toning. Its versatile uses include pullups, chinups, hanging leg raises, push-ups, dips, sit-ups and crunches. As you gain strength, it is easy to add more variations and difficulty into your Pull-up Bar exercises. This exercise bar really is the total upper body workout bar. With the Maximiza, you need minimal space in your house to do highly effective bodyweight exercises. The heavy duty chrome steel bar and the multiple screw-in door mounts provide safety and stability while giving you the flexibility to move it to different places or heights. The non-slip extra-long foam grips provide a firm grip and extra comfort to minimize hand fatigue. The Maximiza Pull Up Bars fit standard doorways between 27 and 39 inches wide. They come with 2 sets of heavy-duty and 1 set of medium-duty door mounts which can be screwed into up to 3 wooden doorframes. Mounting Note: Always secure to the doorframe with the provided heavy-duty door-mount set and screws. The maximum installation height and body weight supported will vary depending on each situation including required usage, mounting method and the door frame. We always recommend using the heavy-duty door mounts for pullups and chinups. Maximum weights and heights for typical installations are: 1. Heavy-duty door mounts: 300 lbs / 136 kilograms. (recommended) 2. Medium-duty door mounts: 150 lbs / 68 kilograms - Do not use above waist height. 3. Only to be used without doormounts at low heights for light exercises, e.g. sit-up foot support. Safety Note: Every time before the pull up bar is used, you must cautiously apply your weight to it during the first few exercises to confirm that it is secure and will safely hold your weight.