These are the Honeybee Herb Bong Bowl Pipe Screens! These screens were designed to act as a barrier between your herbs and your bong or your herbs and your dry pipe. Honeycomb Pipe Screens help keep your pipe and bong clean for longer and keep you from inhaling your herbs before they are properly burned. After combustion, these screens also cut down on the amount of ash sucked into your piece upon inhaling, ultimately keeping your water and smoke cleaner! We offer these screens in a 20-pack of two materials, borosilicate glass, and ceramic to fit any of your needs! You can clean them with Iso or toss them when they are used up, the choice is yours.