This is a nice, sturdy piece of equipment that fits well on my old Northern Fitness bench that has a spot to acommodate bench accessories made with 1 3/4" square tubing. I'll have to drill new holes on my bench if I want to raise it up, but right now it works well inserted all the way down. My only complaint would be that the sides of my knees tend to dig into the bolts at the top, but I'm not sure how else it could be put together. I've just been using a towel as padding. Overall very satisfied.