What is 1.75l of liquor called?

1.75 liters of liquor is typically called a "handle" in the United States. This is a standard size for bottles of liquor, although some smaller bottles may also be called "handles".

It's important to note that the term "handle" is not universally used. In some regions, it might be referred to as a "fifth" (because it's roughly equivalent to one-fifth of a gallon). Other sizes are also common, such as "minis" (50mL), "fifths" (750mL), "magnums" (1.5L), and "Jeroboams" (3L).