This product is the replacement mouthpiece for the Boundless CFC. The Boundless CFC mouthpiece has a screen that sifts and filters vapor in order to cool and purify every hit before it even gets into your mouth. The product is made of high-grade plastic, making it ergonomic, sleek, and durable. The draw resistance is low, allowing you to take fuller hits. The Boundless CFC mouthpiece can be easily removed and attached even without any screwing. Simply pop off the mouthpiece if you want to clean or load the bowl of your vaporizer. The mouthpiece screen can also be easily cleaned for optimal airflow.