This Triple Scale Beer/Wine Hydrometer with Jar and Bubble is a must-have tool for brewing, distilling, and wine making enthusiasts. Made of glass and plastic, this hydrometer allows for accurate measurements with its triple scale design. The included jar and bubble further enhance its functionality, making it easy to measure specific gravity and alcohol content. At 27cm in length, this hydrometer is practical and efficient for creating your own beer, wine, or dessert wine. Please check pictures to be sure as I am not sure what the black item in the 4th picture is called but will include it.