So i just got one of those "iron gym" pull up bars as kind of a gag gift for my birthday...but its actually pretty awesome. It locks onto the door really easy and the way its built, there is no way it can damage the door. I am 6'1, 170 lbs and it holds me just fine. The box says it can hold up to 300 lbs. The only problem is that you have to bend your knees when doing the pullups which makes them easier than being able to fully extend your legs. I like it though.