Very good product as far as I can tell so far. The grippod fits snugly, attaches by tightening one nut onto the rail system. Seems possible it may come loose after a lot of use, but a its no problem to just tighten it every once in awhile. My only complaint (and the reason it isn’t 5 stars) is that sometimes the legs are stubborn in going back in, and you have to really jam them up there to get them to stay. Only a minor inconvenience, worth every penny I spent on it.