I find these incredibly neat.
I wouldn't call these drip tips but more mouth pieces. You can make a thousand different combinations. They screw into one another and the screws are hollow for airflow. For the price of $8.99 for the whole set? Hell by a bunch of sets and make a 10 foot drip tip! lol.
The bases come with double o-rings to ensure a snug fit.
WHERE: >> HERE <<