Ill Glass 15" 38mm Beaker Tube with Slide and Gridded DownstemThe Ill Glass beaker was designed to be the best hitting beaker in the industry. The gridded downstream not only allows for maximum diffusion but can also be pointed up or down to increase or decrease the resistance of the tube for those milky white hits. All Ill Glass tubes have an ice pinch, k clip, and a high airflow pinched funnel slide. All tubes are also custom blasted to perfection. Details: Length: 5. 75" Width: 4. 25" Height: 15" Weight: 1.