ZOB's 18" beaker bong is the perfect, no frills piece that is ideal for everyday use. We love ZOB glass because of their high quality construction and prices that don't break the bank. Made from thick, 5MM walled tubing. This is a quality scientific glass bong. The 18" height gives you loads of lung expanding volume. Smoke is filtered through the slit downstem. The beaker also features an integrated ice pinch for even smoother rips. Beautiful clear glass is finished off with a colored ZOB beaker. Made in the USA!