This rock glass measures 3.3 inches tall and is also known as an old-fashioned glass or lowball glass. Used for serving whiskey on the rocks, this iconic glass got its name from its namesake drink – the Old-fashioned. With a wide brim, these glasses are designed to release the intense flavor of drinks, especially aged scotches and whiskeys. With a thick base, they allow non-liquid ingredients to easily be muddled before adding the liquor. This is a must-have for any beverage kitchen collection. This glass holds 6.75 ounces.