Holistic 7mm Borosilicate Tube, 10in Beaker with Standard Joint. Comes with 18-14mm 3-slit Downstem & 14mm Bowl.  7mm Thick Borosilicate Glass & Ice Pinch. This extra thick, Borosilicate glass is sure to stand up against abuse that would shatter lesser glass. 7 milimeters thick, with a three prong ice pinch, and a wide based beaker bottom, the pipe itself is a thing of next to indestructible beauty. It comes with a standard 3-slit diffused downstem, perfect for making sure the most smoke interacts with the water. Pack the neck with ice to insure your smoke isn't just cool, but ice cold...