Hello, Does this package also include the whole structure where you have to put the meat? Because I already have the meat grinder from Kitchen Aid, so I would only like the tubes to complete the package. Thank you

Hi everyone, I have a question. The instructions at http://docs.whirlpool.eu/_doc/manssade.pdf state that when fitting the sausage horn, a "lock (C) must be fitted on the square shaft at the end of the auger", quote: "Place the lock (C) on the square shaft at the end of the auger". Is this lock included with the sausage horn? Thank you very much for feedback, greetings. Gio.