As a lion, OUR CHIN UP BAR IS SIMPLY THE TOUGHEST CHIN UP BAR ON THE MARKET. This chin up bar is good for upper body training including back, chest, arm, and shoulder. It’s a greatest tool for all Extreme Home Fitness programs. Further, you can not only perform chin up, pull up but also push up, sit up and dips. It takes minutes to put them together and second to remove it from the door frame after your exercise. The bar comes with THE BEST warranty on the market and the fastest shipping method to anywhere in the US including PO Box, APO, AFO and others. Including optional J-Bracket (to hold the bar from being knocked off; not design to hold your weight. The door frame and door trim must hold your weight). Patent pending