This is a Stemless beaker tube from Zob Glass. It stands at approx. 18 inches tall and features a reinforced inline diffuser at the bottom. The stemless design eliminates the downstem and fits the Zob standard 18mm ground glass slide. This tube also has a three hole ice pinch which lets you to add a handful of ice without damaging the diffuser at the bottom. The Zob logo is applied to the front of this tube in yellow & blue.