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 Wubbler bubbler with 18mm fixed stem to an inline perc, which stacks into the UFO perc – which is a tuned dome perc – under the stem. At 15.5 inches this is a bubbler that shreds with insane function! This level of intense percolation really smooths the inhale. 14mm high quality snap bowl comes with. 5mm tubing makes for a solid piece. This bong has blue and black Zob and Wubbler labels. Zob Glass is proud to be American glass made in California, and here at Columbia River Glass we only support American glass!