These graduated cylinder beaker-style wine glasses feature a prominent "Wi" periodic table tab, for the most fundamental element of the universe - Wine! Drink Periodically offers the original and best parody periodic tableware, in a variety of styles and sizes - wine glasses, beakers, and laboratory flasks with unique periodic element tabs. Eye-catching conversation starters - a perfect gift for the STEM dudes or lab girls in your life - medical professionals, teachers, and science enthusiasts of all stripes will appreciate this. Calibration marks in milliliters allow you to pour precise volumes of your preferred alcohol solution. Lab-grade borosilicate glass is oven, microwave, fridge, and freezer safe - Drink Periodically tableware is the real deal Size-250ml/8oz