This beaker shot glass features a periodic table square for one of the most powerful elements known to science: Tequila! Measuring 2.5 ounces with graduated calibration marks in milliliters, allowing you to pour precise volumes of your preferred alcohol solution Lab-grade borosilicate glass is oven, microwave, fridge, and freezer safe - unlike flimsy gag gifts, Drink Periodically glassware is the real thing Eye-catching conversation starters - a standout gift for the teacher, scientist, or medical professional in your life Drink Periodically offers the original and the best Periodic Table styled drinkware, in a variety of styles and sizes - wine glasses, beakers, and laboratory flasks, all with unique element tabs Size-50ml/2.5oz