The re-release of the Riptide Bubbler Carb Caps from Gordo Scientific Glass. The most popular design is back. The OG carb cap combines the functionality of a Gordo Riptide Cap and a traditional bubble cap. The carb cap features and openings on the handle of the bubble. When in use; a finger placed over the opening of the handle closes the center channel. This puts more control in the operator's fingertips and gives you the option to use a larger spread air stream that a riptide cap offers, the more direct straight stream that a bubble cap offers.