Down Tube are a necessary accessories for smoking waterpipe or bong. Bong slides OR Down tubes are typically made from borosilicate glass, and are available in different sizes, shapes and colors. We also carry Heady or plain one-hole push bowl bong slides as well as cheap, clear glass replacement slides. Our wide selection of handcrafted slides from a variety of popular glass artists is sure to meet your smoking needs. CAUTION: PLEASE TAKE SIZE OF THE BONG FOR CORRECT LENGTH AND SOCKET/JOINT SIZE OF THE BONG SO THAT IT CAN FIT PROPERLY.