The drip tips are "Home Grown and Hand Blown" here in the USA.

So why get a glass drip tip?

1 510 Pyrex Glass Drip Tip is a unique product design to improve e-liquid delivery and increase air flow of electronic cigarette atomizers.

2.510 Pyrex Glass Drip Tips make dripping e liquid easier and without the messy liquid build up, eliminating the possibility of getting the liquid in the users mouth.

3.510 Pyrex Glass Drip Tips provide a O-ring for a tight fit and seal.

4.Users find that some current drip tips (made of either metal or plastic ) leave an odd after taste.

5. 510 Pyrex Glass Drips larger hole at the top results in a much fuller, easier draw.

6. The 510 Pyrex Glass Drip eliminates all heat transfer that comes from the atomizer.