Carb caps are a vital component of your dabbing setup. Found in a variety of styles and sizes, carb caps are made to enable low temperature dabbing (which is healthier and safer). The lower temperature of the dab nail, which is maintained by the carb cap, eliminates the harshness that can be produced when inhaling directly off a hot nail.
Carb caps also help keep your vapor from blowing away, while providing enough airflow to evenly melt your concentrates. Directional carb caps can be rotated to direct air at specific parts of your nail, resulting in zero waster material.
Thanks to their shape, many carb caps also function as a dabber.