Want to make the most out of your dabbing sessions?  Use an UFO Directional Carb Cap.

The UFO shape is a popular choice because it is easy to use, effective and fits a variety of quartz and titanium bangers.  Besides creating milky and flavorful dabs, this Pulsar carb cap also offers directional airflow so you'll be able to ensure that valuable concentrate gets entirely vaporized, with no residue or resin build-up. 

This unique cap measures 35 mm in diameter and comes in a wide array of colors.