Ill fitting or missing Grommets, Bearings, & Adapters are some of the most common issues with poorly performing hookahs. Ensuring that everything is sealed up tightly and working as intended is one of the easiest ways to improve the quality of your sessions. Grommets, Bearings, & Adapters come in many different sizes, shapes, and materials, make sure you double check to ensure the parts you order fit your needs.