These now hook over your balls and close together, encasing them in a steel shell. It fits onto the base piece here.
It then allows me to slide this solid steel tube up over your cock, with the urethral tube locking into the end.
You'll note the length and diameter are that of your flaccid cock. That's right, not even the slightest erection while you're locked up, just like in your wish of the perfect Mistress.
Isn't fantasy a powerful thing?