Quartz Bubble Cap

MiniNail Bubble Caps are designed to be used as a carb cap for 20mm and 25mm Quartz bangers.
 
Allows superb directional airflow especially when taking low temp dabs. Pushes your concentrates around to spread thin and increase function.
 
Made of high quality boro glass for enhanced durability and strength. 
A great addition to any quartz Banger.