Black Mountain Products doorway chin up bar is built for comfort and durability. Our doorway chin up - pull up bar is the ultimate fitness training tool for strengthening and developing your back, shoulders, arms, chest, abs and more! The mounted pull up bars durability makes it the perfect solution for traveling. Set up the portable chin up bar in a hotel, home or office. This doorway pull up bar mounts easily to any door frame to transform into your own personal gym. Adjust the exercise bars grip to 12 different positions! As a result, you can build multiple muscle groups with a variety of exercises: wide-grip positions challenging your upper lats, biceps, and forearm muscles, and the narrow-grip positions putting more emphasis on your lower lats. Take the doorway pull up bar off and use it for push-ups and sit-ups! Our chin up pull up bars are so versatile, one piece of equipment can work the entire body. This pull up bar is designed to fit most doorways 24" to 32" wide, with trim up to 3 ½ inches wide