Our glass screens for bowl pipes are made of high quality borosilicate glass and can fit in any of our smoking pipes for sale in our online store. Glass screens are important to use so that you can prevent your ground up dry herbs from getting sucked through the pipe. Thus, saving you more herb material. You can order 10-Packs, 15 packs, or 20packs. We also have small 0.7cm flat glass screens available in 5 packs. Get them now and start smoking more efficiently.