I don’t remember that coming with mine, I’m pretty sure I had to order mine. Also has anyone had trouble with the adapter getting stuck into the faucet? Sometimes mine gets stuck and I can’t get it out.Here is the adapter that comes with the Python. View attachment 1429578
You can see there two different sets of threads. One for the old style faucets (outside set of threads). And one for the new style(inside set of threads). When its new it has another white rubber washer hiding the inside set of threads, thats also the seal when using the outside set of threads.