I bought this to attach a child seat to the back of my bike and eventhough the instructions were horrible on how to put it on, my husband managed to help me and install it anyway. It is just what we needed and works perfectly. I even had my ten year old jump in there when we went out and it hel on pretty tight. I love how simple and strong it is all the extra parts confused me when I installed it but there are different types of bikes so they give you all the hardware you need for all the types of bikes you might have. I think im gonna buy a couple more to put on my husband's bike and the kids...