Thousands and thousands of individuals have purchased Tiffany screwball key rings, and their knock-offs, over the years all over the world, I'm sure. I'm on my second, and my wife has one, and the "screwball" (ball, little house, etc. - whatever screws on) comes off now matter how many times I keep checking it. Thought this may not happen with my current one - the classic original design, because it might be better made but no - the other day, even after I checked it several times, I found it (thank goodness) completely off in my pocket. Does anyone have a trick to keep it on? Can't glue, of course, because I do on occasion have to take a key on or off, like when I leave my car for repair. The screwball can be replace but they don't tend to come cheap - particularly from the great Tiffany, which I've purchased one replacement from so far.