Take your pipe to top notch with this excellent upgrade. This elite piece features an 18mm male joint that complements an 18mm female water pipe. Oh-so satisfying rips pour through the impressive diffusion of this downstem. The Boo Glass 18mm to 14mm Tree Perc Downstem is available in 2 inch, 2.5 inch, 3 inch, 3.5 inch, 4 inch, and 4.5 inch lengths to suit your straight tube or beaker bong. A frosted male joint creates a flawless glass-on-glass seal for premium delivery. Witness the transformation as goodness journeys through an exquisite 7-arm tree perc. This game changing experience raises the bar with masterful diffusion in an eye-catching addition. Crisp clear glass won’t clash with your glass collection, but elevate every design with a contemporary edge. Will you treat your favorite with this special gem or elevate a mediocre piece of glass? Pair it with a powerful ash catcher to make a seriously scientific statement.