Customer Rating: 
Summary: Another happy imbiber, plus some usage details
Comment: Surprisingly happy with these spouts.
There is a double/layered sharp lip which forms a channel and tapers back down toward the bottle. Any drip left at the tip of the inner lip drains back into the bottle via this channel, somewhat like what some clothing detergent bottle designs do. A clever, elegant design; the sort of thing that "floats my boat" as an engineer.
A few details that may be helpful to know:
The lips are quite sharp and can hurt your fingers a bit when you push a spout into a bottle. Haven't cut myself yet, but it can seem close to doing so. You may want to use a wash cloth or similar to help. I sometimes use a small anti-slip pad that I have at hand (used to put under cutting boards, mixing bowls).
I managed to melt the outer lip of one slightly in the dishwasher. The spout was put in a utensil basket on the lower shelf near the heating element, and I forgot to disable the heated drying cycle. Still seems to do its job so far.
The spouts are not foolproof; I have managed to be overconfident with them once or twice and had a drip or two escape. Knowing this, just a bit of care makes your pours perfect every time.
If you like good wines like my wife & I do to the last drop, assuming no sediments, you'll need to remove the spout for the last as it can trap about a teaspoon behind.
