This carb cap is hand-blown from borosilicate glass and maximizes the vapor production of your Peak by increasing airflow. A black tether attaches the carb cap to the atomizer for added security. Get the full potential out of your Puffco electric rig with this essential accessory. Carb Cap Features: Use: Concentrates Compatible with Puffco Peak Enhances Concentrates Flavour Hand-Blown Borosilicate Glass Tether for Security What's in the Box: 1x - Peak Carb Cap with Tether by Puffco