These 6 oz Seltzer Glasses, by Anchor Hocking, are model 7511U. Because of their capacity, they are perfect for holding seltzer, gin and tonics or other beverages. Thes straight sides of this glass, as well as the narrow diameter, will prevent your carbonated beverages from losing fizz. This means these are also ideal for serving soda and liquor, like rum and coke. They are also great for juice, since they have such a small capacity. They feature a full tempered, hardened rim to prevent them from breaking more than the average glass.