Zob OG Beaker Bong This monster beaker from Zob Glass is not for people with weak lungs. It's approx. 24 inches tall, and can hold a ton of smoke. A diffused down stem provides great diffusion to help cool and clean the smoke. The three prong ice pinch lets you fill this bad ass pipe with ice. The beaker is made of 5mm. thick glass. Zob standard 18mm. ground glass slide is included with this beast. Zob goes to great lengths to make sure every piece is one of a kind, so the label will most likely be different than the one pictured. Features a Three Prong Ice Pinch. Height: 24.00 inches. Glass Thickness: 5.00mm. Tube Diameter: 5.50mm. Base Width: 5.50 inches. Down Stem: 6.50 inches - Diffused down stem. Slide: 18.mm - Ground glass slide. Made in California.