If you are looking for silicone mouthpiece covers for your AVD barrel tip mouthpieces, you can buy them separately from our online store. Silicone mouthpiece covers are essential for keeping your carts clean and hygienic after filling them with your product. They also prevent leakage and damage during transportation and storage. Don't worry if you lost your original covers or bought mouthpieces without them. We have you covered with our high-quality silicone mouthpiece covers that fit perfectly on your AVD barrel tip mouthpieces.