Beautiful gold on gold glass tank CCell refillable vape tanks allow you to customize your blend for every situation. 3 tanks on hand ensures you have the blend you want ready when you are. These universal tanks fit on any standard 510 thread pen. Don't have a pen and battery? We carry those too. CCells are available in both 0.5 mL and 1.0 mL sizes and come in a plastic tube with rubber stopper for shipping and storage.