If you like to dab, you should be using a carb cap to help you control airflow to get better rips and to make the most of what you're dabbing. When you use a carb cap like this colorful glass 28mm carb cap , you'll be able to funnel every wisp of concentrate vapor into your rig . This glass carb cap fits most bangers and nails with a 27mm or smaller bucket opening. It's made from durable borosilicate glass and it's very easy to hold and manipulate. This is a great looking carb cap with a colorful striped design that would make a perfect addition to any dab rig.