Hario 80ml Heat Proof Shot Glass - 6PCSTough and heatproof, these shot glasses by Hario are the perfect addition to your espresso workflow. Each glass holds a max of 80 mL, or about 2. 7 fl oz plenty of room for a double espresso. Measure volume in fl oz or mL using the graduated markings conveniently printed on the side of the glass. These shot glasses are intended for use with hot beverages, so you won't have to worry about cracking or breakage from the heat of a shot. Glasses are