15? 7mm Thick Glass Beaker Bong – Heavy-Duty Design with 14mm Bowl & 5.5? Downstem Built for performance and durability, the 15? 7mm Thick Glass Beaker Bong delivers smooth, powerful hits with a rock-solid build. Featuring a 7mm thick glass tube for enhanced strength, a wide 135mm beaker base for stability, and a 5.5? downstem for superior smoke diffusion, this bong is engineered for serious smokers who demand quality. The included thick 14mm bowl ensures optimal airflow and cooler, more flavorful sessions. Key Features: Height: 15 inches Tube Thickness: 7mm heavy-duty glass for extra durability Base Diameter: 135mm wide beaker base for added stability Bowl: Thick glass bowl designed for a 14mm female joint Downstem: 5.5-inch removable downstem for efficient smoke diffusion Material: High-quality borosilicate glass Use: Perfect for daily use, display pieces, or premium collections