High functioning science glass tube from Zob Glass out of California. “Instrumentum Percolatus” is their moniker as they make science glass with insane function through elaborate percolation. This is their straight tube bong with UFO perc – which is a tuned dome perc – into a splash guard perc that sits under ice pinches in an ice chamber. At 15 inches this is an easy to handle medium bong that shreds with insane function! Filling the top with crushed or snowcone ice really cools things down, and with this level of intense percolation it’s a really smooth draw. 14mm high quality snap bowl comes with. 5mm tubing makes for a solid piece. This bong has green Zob labels. Zob Glass is proud to be American glass made in California, and here at Columbia River Glass we only support American glass!