I like them. I can’t breathe well and need it to be fast and get the medicine down into my lungs. That is important for me.
I needed the ring for the new model vacurect with the larger diameter tube. This one is too small and is useless. The ad didn't specify so i wasted my money. Likely they are knowingly offloading these to unsuspecting users.
The machine works great and it is quieter than my previous one. Very happy with this.
Although I am thankful because customer service made sure I received my order, I am not happy with the size. I was expecting it to be big enough for a toddler. It was small enough for an infant.