Each pack of Randy’s Mesh Screens comes with 20 individual screens for use in most glass, metal, ceramic, silicone, or wood smoking pieces. Simply take 1 mesh screen and mold it to fit perfectly within the bottom of the bowl of your favorite piece. Place your favorite dry herb right on top and you are ready to enjoy a debris free smoking experience! These mesh screens ARE NOT intended for any use with our Randy’s vaporizers. We do however offer additional screens that are designed specifically to fit into each of our vaporizers.