A screen or pipe gauze is an important part of a bong or weed pipe. The gauze ensures that the cruched cannabis is contained in the bowl.
100pcs/Bag Smoking Tobacco Metal Filters Pipe Screen Gauze Hookah Water Pipe Stainless Steel Mesh Combustion Support Net 16/20mm - AliExpress
17mm Cone Shaped Gauze Bong & Pipe Gauze With Bulk Deals
Tin of 50 Steel Pipe Screen Filter Gauze Metal Bong Shisha Hookah Case Smoking
Metal screens - Metal Screens Cone Filter For Smoking Pipes 20mm & More Exporter from New Delhi
Conical Stainless Steel Filter Pipe Screen Gauze - Bong Accessories
Buy 12.5mm Brass Rim Conical Screens: Pipe Screens (Gauze/ Filters) from Shiva Online
Bong Bowl Screens – Invincibowl
Gauzes & Screens for Weedpipes & Bongs
Glass Screens for Bongs and Bubblers - Mary Jane's Headquarters