Info Provided by Gordo Scientific Limited re-release of the RipTide Bubble Cap, one of our most popular and most requested carb caps. First Designed and released in 2017. This batch has been updated for todays preferences in airflow. Fits all 25mm Quartz bangers. Made from Borosilicate Glass. Made in Pine, Colorado USA While it may be possible, these caps were NOT designed with the intention of spinning pearls. These carb caps ARE designed to vaporize at exceedingly lower temps when paired with Highly Educated Quartz.