These gaskets arrived in a very small envelope with the sizes altogether. I emptied them out on the counter and it was a jumbled mess. After separating the sizes, I found there were two sizes...small and medium, all very thin, just as a previous reviewer described. If this is what you need, fine. If you need larger or thicker gaskets for heavier duty watches, you're out of luck. In my opinion, these are overpriced for what they are. If there was a nice variety, it would've been better.