Regina 420 Super Store in VapeXcape/Regina Vape Super Store! ... Do the dabs! A wide variety of carb caps by DoDabs are available now! High quality glass! Too many styles and colors to list them all

A “carb” is short for carburetor, and like the one you would find in a car, it helps control airflow and pressure within a space. Carb caps for dab rigs are a pivotal dabbing accessory that effectively operate in the same manner, even sharing the nickname. Acting as a lid to trap heat and vapor within your nail, the cap helps enhance your dabbing experience for a fuller concentrate flavor profile 

The caps are meant to fit over domeless nails and bangers to essentially create a chamber for vaporizing concentrates. A small hole placed in the top of the carb cap allows you to inhale with ease and creates a suction that changes the way your concentrate vaporizes.